0:00:04 > 0:00:06Do you know what, this is really relaxing.
0:00:06 > 0:00:08- It is, isn't it?- Yeah.
0:00:08 > 0:00:09Something's not quite right, though.
0:00:09 > 0:00:11It's a bit too quiet.
0:00:11 > 0:00:13- BOTH:- Where's Radzi?!
0:00:13 > 0:00:17I am in the Lake District, for the Purple Badge spectacular.
0:00:34 > 0:00:36Hello and welcome to Blue Peter.
0:00:36 > 0:00:39Today's show, the summer Badge Baton Relay passes on to this little guy.
0:00:39 > 0:00:41It is, of course, the Purple Badge.
0:00:41 > 0:00:43We're taking a look at some of your favourite moments,
0:00:43 > 0:00:45including one of mine, drone racing.
0:00:45 > 0:00:47- I want one.- Something I don't want
0:00:47 > 0:00:49is to go down the London sewers again. It was very stinky.
0:00:49 > 0:00:51- You're still quite stinky.- Stop it.
0:00:51 > 0:00:54And as for Radzi... In fact, Radzi, what are you up to?
0:00:54 > 0:00:57I'm on an adventure in the Lake District,
0:00:57 > 0:01:00to see the cast of the brand-new film Swallows And Amazons.
0:01:00 > 0:01:03And I've got to get to that island.
0:01:03 > 0:01:06Um... Where's the engine?
0:01:06 > 0:01:08Good luck with that, Radz.
0:01:08 > 0:01:10Today's show is very special because everything in it
0:01:10 > 0:01:13has been suggested by you on your Purple Badge forms.
0:01:13 > 0:01:16Which Holly from London has done, and she says when it says
0:01:16 > 0:01:18"What would you like to see more of on Blue Peter?" Holly's put,
0:01:18 > 0:01:21"I'd like to see more of Barney."
0:01:21 > 0:01:22- Aww!- Isn't that nice?
0:01:22 > 0:01:25Here you go, Holly. We're making dreams come true.
0:01:25 > 0:01:28And - a Purple Badge is on its way to you.
0:01:28 > 0:01:31Now, we love hearing what you lot think about Blue Peter,
0:01:31 > 0:01:33so much so that we caught up with some of you
0:01:33 > 0:01:36whilst you actually watched the show. Have a look at this.
0:01:36 > 0:01:39- Barney, stop it.- I sensed I should. - You can stop now.- OK.
0:01:41 > 0:01:44It's been an epic year so far on Blue Peter.
0:01:44 > 0:01:47That's my favourite one, when she floats the badge.
0:01:47 > 0:01:52We've seen daring challenges, world records and even Shelley in space.
0:01:52 > 0:01:54- Wow.- And you've been using your Purple Badge forms
0:01:54 > 0:01:56to tell us exactly what you loved.
0:01:56 > 0:01:58A perfect reason, then, to watch
0:01:58 > 0:02:00some of your favourite Blue Peter moments again,
0:02:00 > 0:02:03with some of you in the viewing seat.
0:02:03 > 0:02:05Oh, this is so cool.
0:02:05 > 0:02:07In June, we had a surprise in store,
0:02:07 > 0:02:10which came with some serious light entertainment.
0:02:10 > 0:02:12DRAMATIC MUSIC
0:02:14 > 0:02:16It's like they have projectors.
0:02:16 > 0:02:18- I love the dance.- That's epic.
0:02:19 > 0:02:23Look how synchronised they are, like...
0:02:25 > 0:02:27There's Barney. Barney's back!
0:02:27 > 0:02:28Yes!
0:02:29 > 0:02:32Lindsey had an uplifting moment of her own, when she experienced
0:02:32 > 0:02:36weightlessness on a very special space simulating plane.
0:02:36 > 0:02:40Very few people get to do this, so I'm incredibly lucky
0:02:40 > 0:02:41to have a ticket.
0:02:41 > 0:02:43Oh, this looks epic.
0:02:43 > 0:02:46- Do they just drop you out? - Yeah, they just drop you.
0:02:47 > 0:02:51When you go over the peak, it floats, look.
0:02:51 > 0:02:53Oh, my goodness. Oh, my goodness.
0:02:53 > 0:02:56Oh, wow. Wow!
0:02:56 > 0:02:58I'm floating. Oh, my goodness.
0:02:58 > 0:02:59What do I do?
0:02:59 > 0:03:00She's floating.
0:03:00 > 0:03:02That looks sick.
0:03:02 > 0:03:05- I'd love to be her. - That would be amazing.
0:03:05 > 0:03:07Whoa!
0:03:08 > 0:03:11Oh, my goodness!
0:03:11 > 0:03:14Back on solid ground, Radzi was, um, windy.
0:03:14 > 0:03:18It's his whoopee cushion world record attempt.
0:03:18 > 0:03:19- Go.- Go, Radzi.
0:03:19 > 0:03:21Come on, Radzi.
0:03:21 > 0:03:23..11, 12, 13...
0:03:23 > 0:03:24He's just gone past the 40,
0:03:24 > 0:03:26he is on track to do this.
0:03:26 > 0:03:28I think he might do this.
0:03:28 > 0:03:30..59, 60, 61...
0:03:30 > 0:03:32He's going to do it, he's going to do it.
0:03:32 > 0:03:34Three, two, one...
0:03:34 > 0:03:35Yeah!
0:03:35 > 0:03:36Yeah!
0:03:36 > 0:03:39THEY CHEER
0:03:39 > 0:03:41He got a world record!
0:03:41 > 0:03:43It's a world record!
0:03:43 > 0:03:46From world records, to world firsts.
0:03:46 > 0:03:48In her epic wave runner challenge,
0:03:48 > 0:03:53Lindsey attempted to cross the Irish Sea in a modified inflatable ball.
0:03:53 > 0:03:55Here we go...
0:03:55 > 0:03:57I wouldn't do that.
0:03:57 > 0:03:59I'd get super claustrophobic.
0:03:59 > 0:04:02Despite the fact it's dark, conditions are perfect.
0:04:02 > 0:04:05And in the dark as well. How does she know where she's going?
0:04:05 > 0:04:08If you try and run in it, it's really hard, isn't it,
0:04:08 > 0:04:11- cos you just fall over. - You're just slipping.
0:04:11 > 0:04:15I manage to cover two and a half miles in my first hour.
0:04:15 > 0:04:17Lind-sey! Lind-sey!
0:04:18 > 0:04:21But, everything that goes in has to come out.
0:04:21 > 0:04:23So I've done a wee in my wet suit.
0:04:23 > 0:04:25Oh, no.
0:04:25 > 0:04:28Imagine a fish seeing that from underneath, like, "Ooh!"
0:04:28 > 0:04:32I'm running out of time. But I'm determined to get back on course.
0:04:32 > 0:04:35At least you're keeping on trying and you keep going.
0:04:35 > 0:04:37She must be so tired.
0:04:37 > 0:04:40- SUPERVISOR:- It fundamentally becomes too dangerous to be out there.
0:04:40 > 0:04:43I can't believe it's over.
0:04:43 > 0:04:45I've been at sea for nine hours,
0:04:45 > 0:04:48but I have to accept that I can't make it to Scotland
0:04:48 > 0:04:49against the tide.
0:04:49 > 0:04:51I'm devastated.
0:04:51 > 0:04:53Oh, Lindsey...
0:04:53 > 0:04:56I would have gave up after like, an hour.
0:04:56 > 0:04:58No, it's over.
0:04:58 > 0:04:59This is sad.
0:04:59 > 0:05:03Lindsey inspired us all to have a go and do our best,
0:05:03 > 0:05:06which is a popular theme in your letters -
0:05:06 > 0:05:08which we love so much, we did this.
0:05:08 > 0:05:13# To anyone who's ever written to Blue Peter... #
0:05:13 > 0:05:15I never knew Barney could play the keyboard.
0:05:15 > 0:05:18He's all right, actually. He's pretty good.
0:05:18 > 0:05:20Barney is actually a good singer.
0:05:20 > 0:05:22- RAPPING:- # We love open every little thing you people send us
0:05:22 > 0:05:25# Badge creations, badger paintings, dolls like presenters... #
0:05:25 > 0:05:27Is this some kind of poem?
0:05:27 > 0:05:29It's a rap.
0:05:29 > 0:05:34# So keep on sending us your post, whoa-whoa. #
0:05:34 > 0:05:38- It's quite a nice song.- Yeah, that deserves a round of applause.
0:05:38 > 0:05:42- Shh.- It looked like it was performed in a train station.
0:05:42 > 0:05:46And finally - yeah, just a small matter
0:05:46 > 0:05:50of me speaking to a certain friend, you know, whilst he was in space.
0:05:50 > 0:05:52'Yes, this is Houston Comtec.
0:05:52 > 0:05:53'Are you ready for the crew conference?'
0:05:53 > 0:05:55No words.
0:05:57 > 0:06:00Tim, it's Barney. It's so good to see you. How are you?
0:06:00 > 0:06:02Hello, Barney, and hi to Blue Peter.
0:06:02 > 0:06:05- How is it up there?- Barney, life on board is wonderful.
0:06:05 > 0:06:08Just going to the windows and looking down on Planet Earth
0:06:08 > 0:06:10is absolutely spectacular.
0:06:10 > 0:06:12How would they transport him the Blue Peter badge?
0:06:12 > 0:06:16- They're not.- He's wearing one.
0:06:16 > 0:06:17Listen, it's been so good to speak to you,
0:06:17 > 0:06:19and we'll see you when you land. Thanks a lot.
0:06:19 > 0:06:23How has he got a Blue Peter badge all the way up there?
0:06:23 > 0:06:26I look forward to seeing you when I get back. Bye, now.
0:06:26 > 0:06:31That is so...cool!
0:06:31 > 0:06:34So those were some of our fans' favourite moments - but remember,
0:06:34 > 0:06:36you can have your say too.
0:06:36 > 0:06:38Download your Purple Badge form and earn yours today.
0:06:40 > 0:06:42Thank you, Barney. I'm here on an island
0:06:42 > 0:06:45in the middle of Derwentwater known as the Queen of the Lakes,
0:06:45 > 0:06:47which should please Matthew from Somerset,
0:06:47 > 0:06:50who said he'd like us to visit more places around the UK.
0:06:50 > 0:06:53So Matthew, I hope you're happy, my friend.
0:06:53 > 0:06:56This place is also the location for the brand-new film
0:06:56 > 0:06:59Swallows And Amazons, and I'm off to meet the cast.
0:06:59 > 0:07:02Here's to Swallow and all who sail in her.
0:07:04 > 0:07:07I hereby name this Walker Island,
0:07:07 > 0:07:10and claim it for our own.
0:07:10 > 0:07:12Walker family, it's an absolute pleasure to meet you all.
0:07:12 > 0:07:14Let's just go down the line here.
0:07:14 > 0:07:17We have Dane, Orla,
0:07:17 > 0:07:19Bobby and Teddie.
0:07:19 > 0:07:21Welcome to Blue Peter.
0:07:21 > 0:07:24We're back on the actual island where you made the film.
0:07:24 > 0:07:27So the story, Swallows And Amazons, a classic tale by Arthur Ransome,
0:07:27 > 0:07:29but can you tell us what it's about, Orla?
0:07:29 > 0:07:34It's about the Walker family, who go on holiday in the Lake District,
0:07:34 > 0:07:37and they want to sail to the island and when they get here
0:07:37 > 0:07:40they find the Amazon sisters, who have declared war with them
0:07:40 > 0:07:42because they've stolen the island.
0:07:43 > 0:07:46"The Amazons." What does this mean?
0:07:46 > 0:07:49The Jolly Roger. That's their sign.
0:07:49 > 0:07:51THEY SHOUT BATTLE CRY
0:07:51 > 0:07:54- Who are you?- I'm Nancy Blackett, part owner of the Amazon.
0:07:54 > 0:07:57Give us back our island.
0:07:57 > 0:07:59Dane, there's a lot of sailing in this film
0:07:59 > 0:08:00and you're the main sailor.
0:08:00 > 0:08:02Can you actually sail in real life?
0:08:02 > 0:08:04No, we had somebody at the bottom of the boat, actually.
0:08:04 > 0:08:06Oh, did you?
0:08:06 > 0:08:11He was just under a blanket. And with all the stuff lying on it,
0:08:11 > 0:08:13it must have been really uncomfortable.
0:08:13 > 0:08:15You've a fine crew there, Captain.
0:08:15 > 0:08:18- Aye-aye, Mother.- You're all playing brothers and sisters.
0:08:18 > 0:08:20I kind of get that vibe that you've got that kind of relationship.
0:08:20 > 0:08:22Is that fair to say?
0:08:22 > 0:08:25Sometimes we're really friendly and then sometimes we're arguing,
0:08:25 > 0:08:27but not usually - we're usually being really friendly.
0:08:29 > 0:08:31We're on the island.
0:08:31 > 0:08:34This is the place.
0:08:34 > 0:08:36There's something down there.
0:08:36 > 0:08:38- What's that?- A houseboat.
0:08:38 > 0:08:39GLASS SMASHES
0:08:39 > 0:08:42Teddie, what do your friends think of the fact that you
0:08:42 > 0:08:45are actually in a film? That's a pretty big deal?
0:08:45 > 0:08:48My friend, she was reading it at the time
0:08:48 > 0:08:50and she went and got all the books.
0:08:50 > 0:08:53She thought that we were all really good in it.
0:08:53 > 0:08:55That was the bravest thing I've ever seen.
0:09:01 > 0:09:04I massively enjoyed the film. I think it's fantastic.
0:09:04 > 0:09:06It's an absolute pleasure to talk to you all.
0:09:06 > 0:09:08Now, though, this is the Purple Badge show,
0:09:08 > 0:09:10which means it's all about the viewers at home
0:09:10 > 0:09:12and we've got a question right here from one of those viewers.
0:09:12 > 0:09:17Guillaume from Devon wants to see a lion on the show.
0:09:17 > 0:09:20Well, that wouldn't be possible, cos we're on an island here
0:09:20 > 0:09:22and there're no way that it could get here...
0:09:22 > 0:09:24ROARING
0:09:24 > 0:09:26Did you hear...?
0:09:26 > 0:09:27Don't panic!
0:09:30 > 0:09:33Where's that lion? Where is that lion?
0:09:33 > 0:09:34It's not going to get me.
0:09:34 > 0:09:37Anyway, loads of you said you wanted to have
0:09:37 > 0:09:41even more cool stuff on Blue Peter. Well, you're going to love this.
0:09:41 > 0:09:43Check out what Barney did.
0:09:45 > 0:09:47This...is drone racing.
0:09:54 > 0:09:56Drones are unmanned aerial vehicles
0:09:56 > 0:10:00that are often used to capture amazing footage like this.
0:10:00 > 0:10:03Gentle, dreamy shots - lovely.
0:10:03 > 0:10:06But when it comes to racing them, it's all about speed.
0:10:07 > 0:10:08So, in a race,
0:10:08 > 0:10:11drones must complete four laps of this specially designed course.
0:10:11 > 0:10:14They have to fly at about two metres above the ground
0:10:14 > 0:10:18and they go very, very quickly. Simply, the fastest drone wins.
0:10:20 > 0:10:24The man in charge of the Drone Racing League in the UK is Nigel.
0:10:24 > 0:10:26Drones have become very popular
0:10:26 > 0:10:29over the last year, 18 months and people want to race them.
0:10:29 > 0:10:31You can't just fly these in your back garden...
0:10:31 > 0:10:33It's about being sensible with them,
0:10:33 > 0:10:36and we always encourage people to come to model clubs like this one.
0:10:36 > 0:10:38There you can learn to fly them properly,
0:10:38 > 0:10:40and just get out there and have a go.
0:10:40 > 0:10:44But before I have a go, I need to learn how to fly these things.
0:10:44 > 0:10:47And the way it is done is so awesome.
0:10:47 > 0:10:50It's called first-person view, or FPV.
0:10:50 > 0:10:54Racers wear wraparound goggles that receive a video link from the drone,
0:10:54 > 0:10:57basically a drone's eye view.
0:10:57 > 0:10:59And this...is what it looks like.
0:10:59 > 0:11:01Unbelievable.
0:11:01 > 0:11:03And to show me how it all works,
0:11:03 > 0:11:06Luke is one of the UK's best drone racers.
0:11:07 > 0:11:10So I'm going to watch you flying as you fly.
0:11:10 > 0:11:11If you are going to do what I know you can to do,
0:11:11 > 0:11:14- I'm going to need to sit down for this.- All right.- Grandad's ready(!)
0:11:17 > 0:11:20So, I've tuned into Luke's feed and he is fast.
0:11:20 > 0:11:23Oh, my goodness, that is insane.
0:11:23 > 0:11:26It's like watching a really cool computer game.
0:11:27 > 0:11:29Oh, mate. Mate, whoa, whoa.
0:11:29 > 0:11:31Now, it's my turn to give it a go.
0:11:31 > 0:11:33What could possibly go wrong?
0:11:35 > 0:11:38Nice, push forward gently.
0:11:38 > 0:11:40So as long as you keep moving forward, it's a lot easier.
0:11:40 > 0:11:41OK.
0:11:41 > 0:11:43Now you should be able to see us.
0:11:43 > 0:11:44This is weird.
0:11:44 > 0:11:47It actually makes you feel a bit dizzy.
0:11:47 > 0:11:50This is really tough.
0:11:50 > 0:11:53It does actually take a lot of practice to crack this technique.
0:11:53 > 0:11:55I'm struggling to keep the drone under control,
0:11:55 > 0:11:58let alone go around the course... Whoops.
0:11:58 > 0:12:01- I think I'm probably going to be better if I fly without FPV.- Yep.
0:12:01 > 0:12:03I do feel a bit seasick, it's weird.
0:12:04 > 0:12:05So, my challenge.
0:12:05 > 0:12:10How many laps can Luke complete in the time it takes me to do one?
0:12:11 > 0:12:14The course is made up of four gates, and has two tight bends.
0:12:14 > 0:12:17Up for the challenge, some of Britain's best young racers.
0:12:17 > 0:12:20Adam, Luke,
0:12:20 > 0:12:21Lewis,
0:12:21 > 0:12:23and me, minus the goggles.
0:12:23 > 0:12:24Bring it on.
0:12:28 > 0:12:30OK, here we go, bringing drone racing to the masses,
0:12:30 > 0:12:33in three, two, one... Go.
0:12:33 > 0:12:36Luke and Adam fly off the start, and leave me behind.
0:12:36 > 0:12:39But there's a problem for Lewis.
0:12:39 > 0:12:41Wipeout.
0:12:42 > 0:12:44I'm just going for a fly over that side for now...
0:12:45 > 0:12:48Even without the goggles, it's not going to plan.
0:12:48 > 0:12:50Oh, the sun's come out.
0:12:51 > 0:12:53Luke is absolutely flying.
0:12:53 > 0:12:57I'm struggling to go under the first gate, and he's already done a lap.
0:12:57 > 0:12:58Go on, Luke.
0:12:58 > 0:13:00I'm with you, buddy.
0:13:00 > 0:13:02Oh, look - a tractor.
0:13:02 > 0:13:03Oh, I can see my house.
0:13:05 > 0:13:08Back to the real race, and Luke is clocking up the laps.
0:13:08 > 0:13:10So is Adam.
0:13:10 > 0:13:12But then - this happens.
0:13:12 > 0:13:15Adam is out. Let's see that again.
0:13:15 > 0:13:17Oh, unlucky!
0:13:17 > 0:13:19That just leaves me and Luke left in it.
0:13:21 > 0:13:24All right, show off. Luke's even doing flips now.
0:13:25 > 0:13:27Barney, have you done a lap yet?
0:13:27 > 0:13:28I'm just on the way round now.
0:13:28 > 0:13:30This is it. The final bend.
0:13:30 > 0:13:33Luke is so fast, going under every single gate...
0:13:35 > 0:13:37And here comes Barney, finally landing.
0:13:37 > 0:13:40He finally completes his lap!
0:13:40 > 0:13:41It took me 20 minutes,
0:13:41 > 0:13:44Luke did 12 laps in the time it took me to do one.
0:13:44 > 0:13:46But that's why we've got a champion on our hands.
0:13:49 > 0:13:52So there you have it, drone racing - it was fast, it was cool,
0:13:52 > 0:13:54Luke did 12 laps, I did one.
0:13:54 > 0:13:56That doesn't matter. It's all about the practice.
0:13:56 > 0:13:57In fact, do you mind,
0:13:57 > 0:13:59can I just borrow your winning drone there, Luke?
0:13:59 > 0:14:01Thank you. I'm going to have one more go.
0:14:01 > 0:14:02Well, two more goes.
0:14:02 > 0:14:04I might have three erm...
0:14:04 > 0:14:06four more goes on at,
0:14:06 > 0:14:09I might just spend... I might just have a couple of...
0:14:09 > 0:14:11I'll be back tomorrow.
0:14:11 > 0:14:13Now, no Blue Peter show would be complete
0:14:13 > 0:14:15without a Purple Badge badge wall.
0:14:15 > 0:14:17Barney, why are you dressed like that?
0:14:17 > 0:14:18Oh, because Sophie got in touch.
0:14:18 > 0:14:20She's from Cheshire, she wanted to see us dress up more.
0:14:20 > 0:14:22And what are you dressed up as there?
0:14:22 > 0:14:24I'm kind of half duck, half bee.
0:14:24 > 0:14:25Sophie, what have you done?
0:14:25 > 0:14:27But thank you - you've got a Purple Badge.
0:14:27 > 0:14:29Let's have a look at this week's big badge wall.
0:14:29 > 0:14:31I'm going to point out this lovely lady, Ashveer,
0:14:31 > 0:14:34who's ten from Uxbridge, and she says if she was on Blue Peter,
0:14:34 > 0:14:37she would show us how to make a little cushion, how to sew it,
0:14:37 > 0:14:38- in one minute.- Wow.
0:14:38 > 0:14:41- Very precise.- That's got to be a world record.- A little mini make.
0:14:41 > 0:14:44- Come on and do it. We like the sound of that.- Thank you very much.
0:14:44 > 0:14:46John liked it when you tried to tie your shoelaces
0:14:46 > 0:14:48- when you were upside down.- Oh, yeah.
0:14:48 > 0:14:50- That was amazing. - On the anti-G plane.
0:14:50 > 0:14:52- Yeah.- John, I loved that moment too.
0:14:52 > 0:14:53Siobhan, who's nine from Cheshire,
0:14:53 > 0:14:57said she especially likes all the videos on the Blue Peter website,
0:14:57 > 0:15:00but liked when I interviewed a squirrel. A real-life squirrel.
0:15:00 > 0:15:02That did happen, by the way -
0:15:02 > 0:15:04if you haven't seen it, go on to the BP website.
0:15:04 > 0:15:07Barney wants to see more arts and crafts on the show.
0:15:07 > 0:15:10Barney, coming to a screen near you. Best name in the world by the way.
0:15:10 > 0:15:12If you can see your face on this big Purple Badge wall,
0:15:12 > 0:15:15you've got a Purple Badge. Congratulations, on the way to you.
0:15:15 > 0:15:17Now, though, it's time to reveal the fan of the month.
0:15:17 > 0:15:19Radzi, over to you.
0:15:19 > 0:15:21Thank you, Barney. Nice outfit, by the way.
0:15:21 > 0:15:25Now, however, it is the time that you've all been waiting for -
0:15:25 > 0:15:28it is the time to reveal the Blue Peter fan of the month.
0:15:28 > 0:15:31And in August, that fan is...
0:15:31 > 0:15:37on their very own flag, Purple Piano Toucan,
0:15:37 > 0:15:39because you've welcomed newbies
0:15:39 > 0:15:42onto the Blue Peter Fan Club and even shown people
0:15:42 > 0:15:43just how a fan club works.
0:15:43 > 0:15:45And talking about the fan club,
0:15:45 > 0:15:47please do get involved in Beat The Boredom.
0:15:47 > 0:15:50Loads of silly games, loads of online clips,
0:15:50 > 0:15:52everything you need for a fantastic summer holiday.
0:15:52 > 0:15:54Now I've got a question for you all.
0:15:54 > 0:15:56Have you ever wondered how a Blue Peter badge -
0:15:56 > 0:15:58just like that one there -
0:15:58 > 0:16:01goes from the Blue Peter office to your letterbox?
0:16:01 > 0:16:03Well, you're about to find out.
0:16:04 > 0:16:09Last year, Blue Peter sent out over 70,000 badge letters to you guys
0:16:09 > 0:16:10all over the UK.
0:16:10 > 0:16:15Almost all of them were delivered by the good old British post.
0:16:18 > 0:16:20It's a massive operation.
0:16:20 > 0:16:23So we thought you might like to know how our letters
0:16:23 > 0:16:26get from the Blue Peter HQ to you at home.
0:16:26 > 0:16:30So we've picked one piece of post to show you exactly that -
0:16:30 > 0:16:33a delivery to one of the most northern parts of the UK.
0:16:34 > 0:16:37The Isle of Lewis in the Outer Hebrides of Scotland.
0:16:38 > 0:16:42And the story begins 400 miles south, here in Salford.
0:16:43 > 0:16:45And it all starts with these guys,
0:16:45 > 0:16:48the Blue Peter badge team.
0:16:48 > 0:16:53They sort through the thousands of items of post you all send to us,
0:16:53 > 0:16:56and importantly decide which deserve a badge.
0:16:56 > 0:16:58In the case of our letter it's this review of a show,
0:16:58 > 0:17:00from Isle of Lewis resident
0:17:00 > 0:17:02nine-year-old Caitlin.
0:17:04 > 0:17:06Kylie, you think Caitlin's review's worthy of something.
0:17:06 > 0:17:08Yes, I do. A Purple Badge.
0:17:08 > 0:17:10Amazing! In it goes.
0:17:10 > 0:17:12And we're off.
0:17:13 > 0:17:15I'm going to be carrying Caitlin's letter myself,
0:17:15 > 0:17:18and following the journey it would normally take.
0:17:18 > 0:17:19From the Blue Peter office,
0:17:19 > 0:17:23it's processed and prepared for collection by our post team.
0:17:23 > 0:17:26Thank you, sir. And this is where the Royal Mail come in.
0:17:28 > 0:17:312016 marks 500 years
0:17:31 > 0:17:34since the first ever organised postal system in Britain,
0:17:34 > 0:17:37which began as a very slow service on horseback
0:17:37 > 0:17:39for Tudor king Henry VIII.
0:17:42 > 0:17:45Today, there are lots of other companies that can deliver letters
0:17:45 > 0:17:49and parcels, but Royal Mail look after those you put in the postbox.
0:17:50 > 0:17:54And so postman Lee picks up our letter - and me.
0:17:56 > 0:17:58First class post aims to be delivered
0:17:58 > 0:18:00by the next day, so it's a race against time
0:18:00 > 0:18:02to get Caitlin's letter moving.
0:18:02 > 0:18:05First stop, the Manchester Mail Centre,
0:18:05 > 0:18:06managed by Janet.
0:18:07 > 0:18:10Janet, this place is absolutely massive.
0:18:10 > 0:18:11What goes on here?
0:18:11 > 0:18:14So, we sort about one and a half million letters a day.
0:18:14 > 0:18:16One and a half million?
0:18:16 > 0:18:18Yes, and we sort them on these machines,
0:18:18 > 0:18:22which sort the letters into all the different destinations.
0:18:22 > 0:18:25Letters are put through a kind of giant washing machine,
0:18:25 > 0:18:27which sorts them all out by size.
0:18:28 > 0:18:31They then pass through a postcode scanner, which divides them up into
0:18:31 > 0:18:35different areas of the country, ready to be sent out.
0:18:35 > 0:18:37Our letter's travelling to Scotland
0:18:37 > 0:18:41so you'd think it would be going north, right? Wrong.
0:18:41 > 0:18:45Because instead of driving all the way to Scotland,
0:18:45 > 0:18:48this lorry is actually heading two hours south.
0:18:48 > 0:18:50To here at East Midlands Airport -
0:18:50 > 0:18:54because our letter is about to take to the sky.
0:18:54 > 0:18:58Royal Mail has used all sorts of transport to move their post.
0:18:58 > 0:19:03Boats, trains - and they first introduced airmail way back in 1911.
0:19:03 > 0:19:06Pete from East Midlands Airport can explain why.
0:19:06 > 0:19:10Well, it's all about speed - as an example, we fly to Edinburgh,
0:19:10 > 0:19:12the flight from East Midlands Airport
0:19:12 > 0:19:14to Edinburgh Airport takes an hour.
0:19:14 > 0:19:16If we were to run it in a vehicle,
0:19:16 > 0:19:19it's going to be sort of six and a half to seven hours.
0:19:21 > 0:19:23Our letter would be loaded on board a plane
0:19:23 > 0:19:25and taken to the sorting centre
0:19:25 > 0:19:27for the north of Scotland, in Inverness.
0:19:29 > 0:19:31Once it's been checked,
0:19:31 > 0:19:32it is straight back to the airport
0:19:32 > 0:19:35where it's loaded onto another plane -
0:19:35 > 0:19:37to land at our final destination.
0:19:40 > 0:19:4114 hours ago,
0:19:41 > 0:19:44our letter would be in the hands of the Blue Peter badge team.
0:19:44 > 0:19:46And now, incredibly,
0:19:46 > 0:19:50it's on an island off the coast of Scotland, 400 miles away.
0:19:51 > 0:19:55The best part, is Caitlin has no idea we're here.
0:19:55 > 0:20:00As she's already at school, I'm going to hand-deliver her letter.
0:20:00 > 0:20:03Stand by for the surprise of a lifetime.
0:20:03 > 0:20:06(This is Caitlin's class. Here we go.)
0:20:10 > 0:20:12Hi, miss, sorry to disturb you.
0:20:13 > 0:20:16Does anybody here know where Caitlin is?
0:20:17 > 0:20:19Hello, Caitlin. My name is Radzi...
0:20:19 > 0:20:22- Hi.- ..from Blue Peter.
0:20:22 > 0:20:25Caitlin, you sent off for your Purple Badge recently, didn't you?
0:20:25 > 0:20:27So we've come all the way from Manchester
0:20:27 > 0:20:31to present you with your very own Purple Badge.
0:20:31 > 0:20:32There's your letter.
0:20:32 > 0:20:35And inside might just be your own Purple Badge.
0:20:35 > 0:20:37Round of applause, please.
0:20:37 > 0:20:39Can you tell us what show you decided to review?
0:20:39 > 0:20:42It was the one when they were doing the lip sync battle,
0:20:42 > 0:20:43and I thought that was my favourite moment
0:20:43 > 0:20:45because it was really funny.
0:20:45 > 0:20:50- ADELE:- # Hello from the outside... #
0:20:50 > 0:20:54I wanted to watch more of that, cos I really enjoyed watching
0:20:54 > 0:20:58when you had the wigs on and singing. I found that really funny.
0:20:58 > 0:20:59Caitlin, thank you very much for applying,
0:20:59 > 0:21:02and you are an awesome Blue Peter fan. High five!
0:21:07 > 0:21:10If you're lucky enough to have earned yourselves one of these,
0:21:10 > 0:21:11a Blue Peter badge,
0:21:11 > 0:21:13then spare a thought for the journey it's been on
0:21:13 > 0:21:17to get to you. Because that journey is pretty incredible.
0:21:19 > 0:21:22Is there anywhere this badge cannot go?
0:21:22 > 0:21:25And actually that wasn't the only thing we got up to in Scotland.
0:21:25 > 0:21:27If you jump online, you will see a clip
0:21:27 > 0:21:29of me attempt to find the Loch Ness Monster.
0:21:30 > 0:21:32I hope it's not in here.
0:21:32 > 0:21:33Barney!
0:21:33 > 0:21:35So if you want to get yourself a Purple Badge,
0:21:35 > 0:21:38all you have to do is download the Purple Badge form,
0:21:38 > 0:21:39fill it in and send it to us.
0:21:39 > 0:21:42Just like Kitty did from Cornwall - she wanted to learn how to juggle.
0:21:42 > 0:21:44- Watch this.- Uh-oh. Here we go.
0:21:44 > 0:21:46- So...- Whoa, there we go, it's in the veg patch now.
0:21:46 > 0:21:48We'll get back to you on that one.
0:21:48 > 0:21:50Someone else who filled out a Purple Badge form
0:21:50 > 0:21:52was James from Guildford - and here it is.
0:21:52 > 0:21:54He said favourite moment on the show
0:21:54 > 0:21:56was "when Lindsey went down a stinky sewer,
0:21:56 > 0:21:59"but she kept moaning because there was poo in there."
0:21:59 > 0:22:01James, you're right, that really did happen - and just for you
0:22:01 > 0:22:03as a special treat, here it is once again.
0:22:03 > 0:22:04Bleurgh!
0:22:06 > 0:22:09London, home to over eight million people and growing...
0:22:11 > 0:22:13..producing millions of tonnes of waste
0:22:13 > 0:22:16that relies on a network of sewers built 150 years ago.
0:22:16 > 0:22:21And they're struggling to keep up with all that poo.
0:22:21 > 0:22:23Something had to be done, so...
0:22:23 > 0:22:25new super sewers like this one
0:22:25 > 0:22:27are here to help take the extra waste away.
0:22:27 > 0:22:30This is the newly built Lee Tunnel,
0:22:30 > 0:22:33and I'm one of the last people to come down here
0:22:33 > 0:22:35before it starts being used.
0:22:35 > 0:22:39At 80 metres below the surface, it's almost as deep as Big Ben is tall.
0:22:39 > 0:22:41BIG BEN CHIMES
0:22:41 > 0:22:43And it will be able to handle more than 16 million tonnes
0:22:43 > 0:22:47of sewage every year. That's a whole lot of poo.
0:22:47 > 0:22:50This is the deepest tunnel ever built in London,
0:22:50 > 0:22:52and it stretches four miles that way.
0:22:52 > 0:22:54Go for it, Ian.
0:22:56 > 0:22:58Woo!
0:22:58 > 0:23:00What's great is that it doesn't smell...
0:23:00 > 0:23:02yet. It WILL smell.
0:23:02 > 0:23:06At the end of the tunnel is the pumping station,
0:23:06 > 0:23:09where the waste will get transported back to the surface to be treated.
0:23:09 > 0:23:13It's also the place where you'll find Phil,
0:23:13 > 0:23:15who helped construct the new sewer.
0:23:15 > 0:23:19So Phil, why is this new super sewage system so important?
0:23:19 > 0:23:20Why does it need to be here?
0:23:20 > 0:23:24Well, in the 1850s when the Victorians built the sewage system,
0:23:24 > 0:23:26there was only about two million people in London.
0:23:26 > 0:23:28Now we're over eight million,
0:23:28 > 0:23:30we need somewhere for that additional sewage to go.
0:23:30 > 0:23:32Without the super sewer,
0:23:32 > 0:23:35that additional sewage would flow into the Thames.
0:23:35 > 0:23:37And I guess that's what this pipe here does.
0:23:37 > 0:23:39Yeah, this pipe takes it from the tunnel,
0:23:39 > 0:23:41all the way up to the top,
0:23:41 > 0:23:43to be treated in the sewage treatment works.
0:23:43 > 0:23:46So is there anything that I can do to help on this massive project?
0:23:46 > 0:23:48Well, we've got a few more of these bolts to tighten up,
0:23:48 > 0:23:51- so if we go over there...- Great. - ..and get to it.- Let's do it.
0:23:52 > 0:23:55The bolts I'm about to tighten seal the massive pipes
0:23:55 > 0:23:58that transport the waste back to the surface.
0:23:58 > 0:24:01- So I'm going to put the spanner on the bottom here.- Yeah...
0:24:01 > 0:24:05Luckily for me, there's a special machine that does all the hard work.
0:24:05 > 0:24:07And if you push that machine in,
0:24:07 > 0:24:10- push that button at the top...- OK.
0:24:10 > 0:24:12..hear it click in there...
0:24:12 > 0:24:13Oh, it's tight enough.
0:24:13 > 0:24:16- It's happy, isn't it?- No leaks here. - No leaks here.
0:24:16 > 0:24:20London - thanks to me, you're safe from leaky poo now.
0:24:20 > 0:24:21TOILET FLUSHES
0:24:21 > 0:24:24Bolts tightened, and the Lee Tunnel is almost ready to be opened.
0:24:25 > 0:24:27Do you know what? I'm just really glad
0:24:27 > 0:24:29I got sent down a nice, clean sewer
0:24:29 > 0:24:31and I didn't have to go in a stinky Victorian one.
0:24:31 > 0:24:34- A-hem...- Wait, the film's not over yet, is it?
0:24:34 > 0:24:38- Uh... No.- I'm going to have to go in a smelly sewer, aren't I?- Yeah.
0:24:38 > 0:24:40TOILET FLUSHES
0:24:40 > 0:24:42Yep, that's certainly stinky.
0:24:43 > 0:24:45And when I say stinky, I mean it.
0:24:45 > 0:24:47It absolutely hums down here.
0:24:47 > 0:24:49Urgh!
0:24:50 > 0:24:53This sewer runs beneath one of London's busiest areas,
0:24:53 > 0:24:57and it was designed 150 years ago by this man, Joseph Bazalgette -
0:24:57 > 0:25:00nice 'tache, Baz - to take away the city's waste.
0:25:00 > 0:25:02Before the sewer network was built,
0:25:02 > 0:25:04raw sewage went straight into the streets and rivers,
0:25:04 > 0:25:07spreading disease and making the city smell.
0:25:07 > 0:25:10In 1858, it got so bad the era became known
0:25:10 > 0:25:13as the Great Stink of London. Pooey!
0:25:13 > 0:25:17But nowadays, along with the increased population,
0:25:17 > 0:25:19there's another problem causing a strain on the sewers.
0:25:19 > 0:25:23Because lurking in the shadows... are fatbergs.
0:25:23 > 0:25:24DRAMATIC MUSIC
0:25:24 > 0:25:25SHE SCREAMS
0:25:27 > 0:25:29Mixed in with all this poo,
0:25:29 > 0:25:32the fatbergs are huge lumps of congealed grease and oil,
0:25:32 > 0:25:33combined with food and rubbish
0:25:33 > 0:25:36that can be hundreds of metres long. Yuck.
0:25:36 > 0:25:38And today, I'm taking the fatbergs on.
0:25:39 > 0:25:42Gary, it's good to meet you, though I would prefer not to meet you
0:25:42 > 0:25:44down a sewer. What are we going to be doing today?
0:25:44 > 0:25:46Today we're going to be clearing a bit of fat off the walls.
0:25:46 > 0:25:48I've bought you a little present as well,
0:25:48 > 0:25:51- so you can give me a hand doing it. - Brilliant - a pooey shovel(!)
0:25:51 > 0:25:52OK, so where do we start here?
0:25:52 > 0:25:55So you just go down like that, tug it...
0:25:55 > 0:25:56I think I can manage that.
0:25:56 > 0:25:59There's just one small problem...
0:26:00 > 0:26:02Sorry, the smell is so bad.
0:26:02 > 0:26:03This is horrible!
0:26:03 > 0:26:06Do you know the best thing to do?
0:26:06 > 0:26:08- Yeah?- Think of somewhere hot and nice.
0:26:08 > 0:26:09It goes out your mind.
0:26:10 > 0:26:12- I don't know about that. - It will, trust me.
0:26:12 > 0:26:14Let the shovelling begin.
0:26:15 > 0:26:17SHE GROANS
0:26:17 > 0:26:19There you go, Linds, look at that.
0:26:19 > 0:26:23What this is, is the fat, the same as on the walls, on top of the flow.
0:26:23 > 0:26:25Oh, that is so deep.
0:26:26 > 0:26:27So Gary, what SHOULD be down here?
0:26:27 > 0:26:30Only three things should be down in this sewer, and that's pee,
0:26:30 > 0:26:32paper and poo.
0:26:32 > 0:26:34- The three Ps.- The three Ps. - That's it, nothing else.
0:26:34 > 0:26:38- Nothing.- Anything else you put down your loo or your sink ends up here.
0:26:38 > 0:26:39Fatbergs also come at a price,
0:26:39 > 0:26:44because they cost water companies millions of pounds to get rid of.
0:26:44 > 0:26:45That...
0:26:45 > 0:26:49is what a fatberg looks like, and it absolutely stinks.
0:26:49 > 0:26:51- Can I put it down? - Just put it down.
0:26:56 > 0:26:58Do you know what?
0:26:58 > 0:27:01That was so smelly down there, but having seen what's down there
0:27:01 > 0:27:04I now understand exactly why new super sewers
0:27:04 > 0:27:06like Lee Tunnel are needed.
0:27:06 > 0:27:07Can I get out now?
0:27:09 > 0:27:12Thankfully, the new sewer will be sending millions of tonnes of waste
0:27:12 > 0:27:15to this treatment works to be filtered.
0:27:16 > 0:27:18After the sewage is treated
0:27:18 > 0:27:21it ends up here, where it re-enters the River Thames as clean water.
0:27:23 > 0:27:25I can smell something really pooey.
0:27:26 > 0:27:27And I think it's me.
0:27:29 > 0:27:30Don't, I don't smell any more,
0:27:30 > 0:27:32I have had a bath. Now, coming up next week,
0:27:32 > 0:27:35we are going to switch from the Purple Badge to the silver
0:27:35 > 0:27:37in our Badge Baton Relay.
0:27:37 > 0:27:39- Cannot wait.- Also, I take part in a race...
0:27:39 > 0:27:41- Mm-hm.- ..in a bath.
0:27:41 > 0:27:42- That's true.- I can't wait for that.
0:27:42 > 0:27:45As well, if you head to the Blue Peter website right now,
0:27:45 > 0:27:48you can learn how to make this, your very own Badge Baton.
0:27:48 > 0:27:50It's very exciting. All the details you need to make that are there,
0:27:50 > 0:27:53and lots of ideas to keep you busy throughout the summer.
0:27:53 > 0:27:54We're off. Say goodbye, Radzi.
0:27:54 > 0:27:56Goodbye, Radzi.
0:27:56 > 0:27:57D'you see what I did there?
0:27:57 > 0:28:01Anyway, Millie from Suffolk said she'd like to see more breakdancing
0:28:01 > 0:28:04on the show. So I got thinking, I had this idea...
0:28:04 > 0:28:07- Oh, no. He's going to do it.- Radz, you can't finish the show like that.
0:28:07 > 0:28:08Cue the music!
0:28:08 > 0:28:10BLUE PETER THEME PLAYS