Neil Oliver travels the coast of the island of Arran.
Nicholas Crane visits Bamburgh in Northumberland, whose castle sits on a basalt crag.
Miranda Krestovnikoff searches for the biggest sharks in British waters.
12/31 Neil Oliver ventures out on to Worm's Head, a snake of land off the Gower Peninsula.
The Coast experts visit a spectacular marine reserve off St Abbs and the Bass Rock.
11/23 Alice Roberts visits a plant that supplies a fifth of Britain's gas requirements.
2/23 Mark Horton learns how William the Conqueror taught the English how to construct castles.
Neil Oliver visits Chapel Bay Fort in Milford Haven.
Hermione Cockburn looks at the rate at which the sands around Southport are disappearing.
3/23 Mark Horton unearths the history of a unique Victorian railway which ran underwater.