On 17 June 1940, a packed British troopship was sunk off the coast of France by German bombers. The ship had just picked up thousands of British military personnel left behind in France after the evacuation of the army at Dunkirk. It's believed around 5,000 people lost their lives. It was one of the worst maritime disasters in British history and news of the sinking was initially supressed in Britain. Alex Last spoke to 99-year-old Ernest Beesley, a sapper in the Royal Engineers, who is among the last survivors of the Lancastria.