FORTRESS BRITAIN WITH ALICE ROBERTS

8.30PM, CH4

★★★★

With her red hair and matching jacket, Alice (right) makes quite an impression as she introduces this new, four-part series exploring how Britain has coped with the constant threat of invasion. Joined by Professor Danielle George and Dr Onyeka Nubia, Alice learns how

Henry VIII tried to protect his kingdom from European aggressors. You can watch the full series on All4 after the first episode airs.