Max Pearson presents a collection of this week's Witness History episodes from the BBC World Service.

We hear about the Scottish students who removed the 'Stone of Destiny' from Westminster Abbey in London. Former King Simeon II of Bulgaria explains how he went from child King to Prime Minister of his country. Also, why the body of Oliver Cromwell was dug up and executed in the UK in 1661. The son of Jean-Bédel Bokassa explains why his father proclaimed himself Emperor of the Central African Republic. Plus the story of the King found under a car park in England.

Professor Cindy McCreery speaks to Max about royal thefts and repurposing of regal items.

Contributors: Ian Hamilton, student who removed the 'Stone of Destiny. Cindy McCreery, Associate Professor in History at the University of Sydney. Charles Spencer, historian. Dr Gabriel Heaton, specialist at Sotheby's auction house. Simeon Saxe-Coburg-Gotha, former King and former Prime Minister of Bulgaria. Jean-Charles Bokassa, son of Jean-Béddel Bokassa. Dr Richard Buckley OBE, leader of the team which dug up Richard III's remains.

(Photo: Jean-Béddel Bokassa after he crowned himself Emperor Credit: Getty Images)