From the guestlist to the dress code, to the quirky twist only he could have insisted on, The Mail's Royal Editor Rebecca English reveals the plans for the funeral of the Duke of Edinburgh. PLUS the secret life of Philip - our experts look at the life of the Duke away from the cameras with unmissable insight from the Duke's official biographer Gyles Brandreth, the Mail's Editor at Large Richard Kay, and historian Dr Tessa Dunlop.