Rob Bell looks at the construction of more rock lighthouses, beginning with Wolf Rock - 8 miles off the Cornish coast. He discovers the feat of Victorian engineering required to build the structure against the power of the Atlantic Ocean.
Rob explores the history of The Smalls, one of Britain's most remote offshore lighthouses. Situated 20 miles off the Pembrokeshire coast, its isolated location on a reef in the Irish Sea has challenged builders, architects and keepers.
Rob Bell explores the spiritual home of lifesaving - the Longstone lighthouse off the coast of Northumberland, scene of a much discussed rescue attempt by the Victorian lighthouse keeper's daughter, Grace Darling.