Organisers of King Charles and Queen Camilla's Coronation are now in a "race against time" to finalise plans for the historic event.
Although shorter than previous ceremonies, the Coronation at Westminster Abbey will feature all the traditional elements, including the anointing, crowning and oath.
There will also be roles within the service for several senior royals, including the King's oldest grandchild Prince George, who will be page of honour for his grandfather.
However, one senior working royal, who ordinarily would have played a role in the ceremony looks set to miss out - along with Prince Harry if he attends.
In coronations in the past, royal dukes would kneel before the sovereign to pay homage to them. Traditionally they would also touch the crown and kiss the monarch's right cheek.
Owing to his recent promotion to the Duke of Edinburgh, Prince Edward would have been among those in line to carry out this task - as would Harry.
Others would have been Prince Andrew, the Duke of York, the Duke of Gloucester and the 87-year-old Duke of Kent.
However, the Sunday Times has previously reported that at Charles' Coronation, the only royal that will pay homage to him will be heir to the throne and Prince of Wales, Prince William.
A source told the paper: "Prince Harry has been written out of the script for the Coronation, with no official role in the service if he attends.
"Breaking with tradition, Charles will scrap royal dukes kneeling and paying homage to the monarch. Only William will perform that role. As things stand, there is no role for Harry in the service."
It comes as the King's Coronation has been plunged into chaos after rehearsals overran significantly, prompting fears the nation will switch off and heap more pressure on the stuttering start to the monarch's reign.
A source said royal aides are working around the clock in their determination to ensure everything is perfect for the big day.
With just 25 days left, a feeling of panic has reportedly gripped the royal household as the clock ticks down for the once-in-a-generation event.
However, royal sources last night attempted to dampen down the anxiety, saying: "It's fair to say it will go down to the wire, but there is huge confidence everything will go to plan on the day.
"This is naturally a huge event and the important point is everyone is pulling in the right direction.
"The King and Queen Consort want it to be perfect as does everyone involved which is why everything is being done to make it so."
