Forensic scientist looks into death of Richard I

Richard I died from an infection at the age of 42 after being poorly treated for a crossbow wound during a siege of a French castle.

Philippe Charlier, who previously helped dispel claims that Napoleon was poisoned to death by his British captors, has been given exclusive access to a tiny sample of the heart of the crusading English king

King Richard, famed for his bravery, brutality and bad temper, ruled England from 1189 to his death in 1199.