60 Years of Reign over the UK and Commonwealth, Queen Elizabeth II has marked the Diamond Jubilee celebrations. he Queen has said she is dedicating herself anew to your service, as she marks the 60th anniversary of her accession to the throne.
In a message, she also said she felt deeply moved by the support shown for her Diamond Jubilee.
It will be marked by several events, with the main celebrations in June.
The Queen, 85, usually spends Accession Day – the day her father, George VI, died in 1952 – privately but this year has two engagements in Norfolk.
This year’s anniversary will be marked by visits to King’s Lynn Town Hall and the nearby Dersingham Infant and Nursery School.
Crowds are expected to gather to greet the Queen, despite the cold conditions.
Two official photographs are being released and a 41-gun salute will be held in Hyde Park, London, followed by a 62-gun salute at the Tower of London.
BBC diplomatic and royal correspondent
For the Queen, this is a day of celebration – her great-great grandmother Victoria was the only other British monarch to achieve this milestone – and commemoration, marking as it does the anniversary of the death of her beloved father, George VI.
So, a significant moment will pass in a deliberately low-key manner with a visit to a town hall and a primary school in Norfolk.
As the weather improves and the months go by, there will be nothing subdued about the events which will be staged for a reign which is the second longest in British history.
Her close friend, Lady Penn, told the BBC the Queen had been the “still small voice of calm” in a social revolution in this country over the past 60 years.
In her Diamond Jubilee message, with the words “I dedicate myself anew to your service”, the Queen is repeating a pledge she first made at the age of 21.
This is a royal octogenarian who intends to remain as Sovereign for as long as she lives.
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During her reign over the UK and Commonwealth, Queen Elizabeth II has seen 11 prime ministers come and go, with David Cameron her 12th.