“I suspect they will have many of the British traditions that Harry is used to, we have seen him dressing the tree with Archie. They will have as close to a British Christmas in California as they can.

“Of course, what they won’t have is the traditional royal Christmas experience at Sandringham.”

A source has divulged that Harry and Meghan have not been invited to spend Christmas with King Charles and Harry’s family at the Norfolk estate, as the rift between the Sussexes and the rest of the Firm rumbles on.

Mr Fitzwilliams told Express.co.uk that Meghan is not likely to want to come back to Britain, and will not want to bring her children over here either.

He said: “It does seem unlikely that Meghan will be visiting Britain any time soon. The same, in the short term anyway, applies to Archie and Lili.

“I see no substance to the rumour that Harry will split his time between the United States and Britain. He has serious concerns about security and still has a case pending against the Home Office regarding this which is awaiting trial.

“It is obviously important is that there there is an arrangement, probably, though not necessarily with the Royal Family, which gives him a secure permanent base which he can use when he does visit Britain.”