The Interior Ministry also declined to comment, but said such schemes were decided by the executive committee on the protection of royalties and public figures and were based on an assessment of risk rather than a person’s willingness to pay for protection.
It is understood that the Sussexes flew first class to Heathrow on a commercial flight, accompanied by their own security personnel. In the Netherlands, they have been given VVIP status, with the Dutch government giving them increased security.
Some royal commentators have suggested that the Queen, who turns 96 next Thursday, far from feeling taken advantage of by the visit, will have been pleased with the visit from her grandson and his wife.
Ingrid Seward, editor-in-chief of Majesty magazine, said: “It’s a wonderful opportunity to purify the air and offer an olive branch. After all that has gone on, it must have taken a lot for Harry and Meghan to go to Windsor.
“Maundy Thursday is also a very special day for the Queen, as it is about forgiveness. She is not one to bear grudges, and I think she would have gladly welcomed them with open arms. “
A spokesman for the Duke would not discuss details of the visit, but said: “We can confirm that they visited the Duke’s grandmother, as we previously said he hoped to do. They stopped at the UK on their way to The Hague to take part in the Invictus Games . ”