King Charles III's plans for a slimmed-down coronation include non-royal dukes culled from the guest list, it has been reported.
It comes as only working royals will be on the balcony to watch the flypast over Buckingham Palace - leaving out Prince Harry and Prince Andrew.
In another move to stray away from tradition, the King has decided to tell peers to leave their coronation robes and coronets at home and come dressed in what amounts to a business suit - after they have been worn for more than 500 years.
The palace have yet to confirm the official guestlist for the King's coronation, but some of the non-royal dukes who haven't been given an invitation include the Duke of Rutland and the Duke of Somerset, it has been reported.
The 'duke' title is the highest-ranking hereditary title out of the five peerages.
It outranks marquess, earl, viscount and baron - in that order.
Of the non-royal dukes who were said to have been snubbed is Edward Fitzalan-Howard, who is Duke of Norfolk as well as the Earl Marshal, making him the most senior peer in Britain. His role as Earl Marshal is also seeing him plan every detail of the coronation.
David Manners, the current Duke of Rutland, reportedly does "not really understand" why he's not been invited either, reports say.
He told Richard Eden for the Daily Mail: "It has been families like mine that have supported the Royal Family over 1,000 years or thereabouts."
Mr Eden also says John Seymour, the Duke of Somerset was "sprucing up the family state coach" in anticipation of an invite after assuming one would be extended since it is "the second oldest dukedom after Norfolk's".
It comes as the biggest security operation in a generation will be mounted at the Coronation amid fears of attacks.
Police say eco-warriors, terrorists, and anarchists are a danger.
Ex-head of Royal Protection Dai Davies said: “The threat is as big as it has been in 50 years.”
Security chiefs are battling against an unprecedented number of threats from terrorists, anarchists and eco-warriors looking to disrupt the event.
Royal protection cops are planning the biggest security operation in a generation over safety fears to the King and Queen Consort on Coronation weekend.
Specialist cops have even widened their remit from concentrating on established terror groups and other “fixated individuals” to controversially include members of peaceful campaign groups.
