At the time Buckingham Palace said Prince Archie, who was three months old, was too young to travel to Scotland for the trip.
Mr Lacey added: “But that didn’t stop the Sussexes somehow managing to travel to Minorca for a week that August, and then taking Archie with them for a few days in the South of France with Elton John and his partner David Furnish.”
The Sussexes were also reportedly invited to stay at the castle last summer by the late Queen Elizabeth II, but again turned it down.
Balmoral was largely thought to be Her Majesty’s favourite place where she could get away from the public and spend time outdoors and with her family.
It is also the place she spent her final months before her death in September.
