In this second programme intrepid historian Sam Willis continues to explore the invasions that have shaped Britain.He tells the story of the Barbary Corsaire pirates, who made their HQ on Lundy Island, and brings together the evidence of the little-known tale of King Louis the Lion.This French King invaded Britain in the 13th century after being invited to do so by plotting nobles. He was even crowned at St Paul's, but politely retreated when asked. Sam also looks at one day in 1687 when a huge Dutch task force sped up the Medway, and plots the progress of perhaps one of the most audacious attempted invasions ever - by the imposter Perkin Warbeck.

In this final programme historian Dr. Sam Willis (pictured) finds evidence of the rich legacy of the Huguenots, who came to Britain bringing fine silks and the latest technological developments. He also discovers the ingenious French plans to invade Britain by balloon and the subterranean fortress built for troops in the 19th century when invasion paranoia was at fever pitch.