Charles and Camilla’s three-year marriage could be on the rocks

The pair are to go away together for a fortnight in Scotland, broken only by a trip to Lincolnshire where Charles will present Prince William with his pilot's wings.

However, behind the romantic appearance, friends believe the shine has started to come off the relationship.

Side by side: Charles and Camilla together in Windsor last month

 

The couple are said to argue in front of aides and Camilla sometimes prefers to spend time alone at her country hideaway.

Clarence House denies there is any rift, and the friends stress that the problems are far from insurmountable.

But it seems apparent that some of the freshness has left their long partnership since it was finally formalised.

"The rows have been escalating over the past three months," one well-placed source said.

"The staff are getting tired of it because you can't help but hear the shouting. As you can imagine, it's hugely embarrassing when that happens."

Their anniversary on Wednesday will be spent at Birkhall, the house on the Balmoral estate that Charles inherited from the Queen Mother.