A single jewel in the Tower of London has seen the rise and fall of more empires, caused more bad luck and been more prized than any other precious stone on Earth. The Kohinoor is the most famous - and infamous - diamond in the world, but it’s only one of tens of thousands of jewels and numerous crowns that make up Britain’s most valuable treasure, the Crown Jewels. Now, to mark the Queen’s historic platinum jubilee - 70 years on the throne - Clive Myrie explores the objects that symbolize her authority. Collected over centuries by British kings and queens, these objects are now used on ceremonial occasions including the coronation, where they announce the arrival of every new monarch. With unprecedented access and the latest technology, Clive reveals the magnificent, astonishing, complicated thousand-year history buried within the Crown Jewels. These jewels - some of the most beautiful objects ever crafted - reveal the complicated story of our island over the last millennium.

Celebrity Mastermind is a British television quiz show broadcast by BBC television. The show is a spin-off of the long-running quiz show Mastermind, with the exception that all the contestants are celebrities. As with the main show, John Humphrys is the host and question-master. Magnus Magnusson was quizmaster on the 2003/04 episodes featuring Jonathan Meades as winner.

Mastermind is a British quiz show, well known for its challenging questions, intimidating setting and air of seriousness. Devised by Bill Wright, the basic format of Mastermind has never changed — four and in later contests five contestants face two rounds, one on a specialised subject of the contestant's choice, the other a general knowledge round. Wright drew inspiration from his experiences of being interrogated by the Gestapo during World War II. The atmosphere is helped by Mastermind's famously ominous theme music, "Approaching Menace" by the British composer Neil Richardson. The quiz programme originated and was recorded in Manchester at studios such as New Broadcasting House and Granada Studios, before permanently moving to MediaCityUK in 2011.