Princes William and Harry have thanked the many people who have shared in their grief over the death of their mother exactly a year ago.
But they have also asked for privacy on the first anniversary of the death of Diana, Princess of Wales.
The Queen's spokeswoman said: "The Queen and the Royal Family, particularly the Prince of Wales, Prince William and Prince Harry, would like to thank people for their messages and kind gestures of sympathy at this sad time and for sharing their remembrance of the Princess of Wales."
|The moving tribute to their mother one year ago|
Innumerable messages of condolence have been received by the Royal Family - many via the visitor's book at the British Monarchy's official Website.
Part of its introduction reads: "The Queen, The Prince of Wales, Prince William and Prince Harry thank all those people who have kindly sent messages of sympathy and support on the first anniversary of the Princess of Wales's death."
The first anniversary of the death of Diana, Princess of Wales is being marked by private services by her family.
In Scotland, Princes William and Harry will be accompanied by their father Prince Charles and the Queen at a special service.
Prime Minister Tony Blair and his wife Cherie and their children will also be present on Monday at Crathie church, near Balmoral.
At Althorp, the Spencer family will hold a memorial service at the lakeside overlooking the island where Diana, Princess of Wales is buried.
The timing of this service has not been made public but the earl and his two sisters are expected to attend this private act of worship.
The Northamptonshire estate was closed to the public on Sunday although it is expected that flowers will continue to be laid at its gates from well-wishers.
Mohamed al-Fayed, whose son Dodi died in the same crash as the princess, will attend a private memorial service at his son's tomb in the grounds of the family home at Oxted, in Surrey.
Timetable of key events
Buckingham Palace and Kensington Palace will be open to visitors.
Flags at government buildings and royal residences will fly at half mast.
Special prayers will be said for Diana within the normal services at
Westminster Abbey at 8am, 12.30pm and 5pm.
9am - Members of the Royal Family and Tony and Cherie Blair will go to
Crathie Church for private prayers.
10am - A new memorial to Diana and Dodi Fayed will be unveiled at Harrods
by Mohamed Al Fayed.
10am - Mass of remembrance at St Columba's Roman Catholic cathedral in Oban.
12pm - A requiem mass is being held at Westminster Cathedral.
Earl Spencer, Lady Jane Fellowes, Lady Sarah McCorquodale and their
families and staff will attend a private memorial service at Althorp.
Late afternoon - A private requiem service will take place in the Chapel
Royal at St James's Palace for members of the royal household and former
employees and staff of the princess.
5pm - Cultural group Odessee Decouverte will stage a vigil at the
scene of the fatal car crash with poems and a choir.