Moment Prince Philip's coffin is lowered into 200-year-old vault below St George's Chapel before he is moved to King George VI Memorial Chapel when the Queen dies
Prince Philip's coffin was lowered beneath the floor at St George's Chapel
Duke of Edinburgh will join a range of kings and queens behind a set of iron gates
Among the Royals there include George III, George IV and George V of Hanover
Others who are also buried there include Queen Victoria's father Prince Edward
