Matt Baker and Julia Bradbury head for the borderlands and beyond.
How the Irish saved Britain from cultural oblivion during the Dark Ages of 400-800AD.
Looks at Roman Britannia, where finds include the thickening mystery of 97 baby skeletons.
Dan Snow and Sian Williams experience what life was like on board a 19th century warship.
Rom the Roman and Sen the Centurion visit Roman sites near Hadrian's Wall.
A look at signs of the past in Dover, Richborough and Colchester.
A look at Watling Street, St Albans, Wroxeter and Chester.
Rom the Roman and Romola the Roman Lady visit Roman sites at Bath, Chedworth and Caerleon.