Sir David Jason, who made his name as Del Boy in Only Fools And Horses, is to star in a new BBC1 comedy series for the first time in 20 years.
The veteran actor, 71, has been cast as the floundering chief of royal security who has been promoted with the Queen's blessing to the important role following a "terrible misunderstanding".
His character, Captain Guy Hubble, who previously worked in the Buckingham Palace car park, is a lifelong soldier who saw action in Cyprus and Northern Ireland but is now completely out of his depth.
The Royal Bodyguard will be the first new BBC1 comedy series for the actor since the last series of Only Fools And Horses, which also launched Nicholas Lyndhurst to fame as gormless Rodney, was broadcast in 1990-91.
BBC1's new comedy has been penned by Mark Bussell and Justin Sbresni, creators of The Worst Week Of My Life, and executive produced by Jimmy Mulville.
Sir David said: "I am really looking forward to working with the very talented producer Jimmy Mulville, and working on a great comedy project with the BBC."
He added: "It will be good to have a laugh again!"
Jimmy said that when Sir David was suggested for the starring role "I thought I'd died and gone to heaven!"
The series will go into production in July.
Only Fools And Horses, written by John Sullivan, aired for seven series until 1991 on BBC1 and was followed by Christmas specials.