Prince William and his wife, now the Duke and Duchess of Cambridge, have decided not to go on honeymoon immediately.
The couple left Buckingham Palace in London by helicopter on Saturday, the day after their wedding, and were to spend the weekend in the UK before the duke returns on Tuesday to his job as an RAF search and rescue pilot.
The couple live on Anglesey, but St James's Palace said they would not be spending the long weekend there.
They are believed to be at the Queen's Balmoral Estate in Scotland.
Before leaving for the weekend the couple were photograped walking through the grounds of Buckingham Palace.
The royal family said in a statement that the honeymoon would start at an "undisclosed date". The location would not be revealed in advance.
The statement said it was the couple's personal preference to have the honeymoon at a later date.
It called on the media to respect their privacy following Friday's spectacular royal wedding in London.
Estimates put the global television and online audience for the wedding coverage at 2.4 billion people.
Meanwhile, Clarence House has released three official wedding photographs.
In line with a tradition begun by the Queen Mother, the bridal bouquet was placed on the grave of the unknown warrior at Westminster Abbey on Saturday.