The Queen is marking the anniversary of her accession to the throne at Sandringham.
She became monarch 58 years ago on the death of her father King George VI.
He died on February 6 1952 at the royal estate in Norfolk after suffering from lung cancer.
The Queen will remember the anniversary of his death in private.
The 83-year-old monarch returns to Buckingham Palace on Monday following her annual break in Norfolk over the Christmas period.
She is set to celebrate her Diamond Jubilee - 60 years as Queen - in 2012.
Princess Elizabeth was at the Sagana Hunting Lodge, Nyeri, in the foothills of Mount Kenya, with Prince Philip when the news of her father's death and that she was now Queen reached her.
Royal gun salutes are fired around the country on Accession Day.
A 41-gun salute will be performed by the King's Troop Artillery in London's Hyde Park and a 62-gun salute at the Tower of London by the Honourable Artillery Company.