In this Diamond Jubilee year, BBC Arts Editor Will Gompertz has been selecting some of the most revealing objects from the Royal Collection to see what they tell us about the monarchs who acquired them. It is one of the most wide-ranging collections of art and artefacts in the world, and also one of the most surprising - offering up an intriguing insight into the minds of the monarchs who assembled it. During the course of this series, Will has encountered dozens of these unique objects - some priceless, others no more than souvenirs - each giving a glimpse into the essential characteristics of a successful sovereign. And in this, the final programme, he delves once more into the Collection to see what a subtly doctored portrait of Richard III, a bombastic mural that once hung in the Palace of Whitehall and the paintings on the Grand Staircase in Buckingham Palace tell us about how the Monarchy has dealt with a series of dynastic crises. And he joins the Royal Collection at work today and sees how Leonardo da Vinci, Johannes Vermeer and a pair of four foot candelabra are brought into the service of both Queen and country. Producer: Paul Kobrak.