Their office will remain at Kensington Palace and press officers will be split between the couples, with extra staff possibly assisting from Buckingham Palace.
The split will reflect the Cambridges’ and the Sussexes’ different responsibilities and areas of interest.
William, 36, is second in line to the throne and is taking on more work related to being a future head of state, whereas Harry, 34, who is sixth in line, has more free rein.
A source told The Sunday Times: “When William becomes the Prince of Wales, he will take on a lot of extra responsibility, including the Duchy of Cornwall. Harry and Meghan have none of that, and seem ambitious about forging their own paths.
“If you have one private office trying to manage both, things get difficult. William and Harry’s double act has naturally been supplanted by the two couples and their families.”
William has reportedly attended several Duchy of Cornwall meetings with his father Prince Charles in recent months to finalise the details of how everything will operate and to ensure a smooth transition with the two separate households.
Harry and Meghan’s plans to move to Windsor and the household division sparked rumours of reported tensions between them and William and Kate.
However, when the Duke and Duchess of Cambridge had their eldest children Prince George and Princess Charlotte, they based themselves at their Norfolk home Anmer Hall so they could concentrate on bringing up their family away from the spotlight.
William also had his flying career with East Anglian Air Ambulance, but gave up his role in 2017 in order to concentrate on his official royal duties.
The royal brothers first created their own private office, originally based at St James’s Palace in 2009, breaking away from Prince Charles’s court at Clarence House.
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