Members of the Royal Family have attended a service of thanksgiving to mark the Duke of Edinburgh's 90th birthday.
More than 750 guests joined the Queen and other royals at St George's Chapel, in Windsor Castle, to honour Prince Philip, who turned 90 on Friday.
The Duke and Duchess of Cambridge and Prince Harry were among the guests.
They were joined by representatives from the worlds of sailing, polo, carriage driving and shooting.
The BBC reports members of the Mountbatten family, foreign royals and past and present royal household staff were also in the congregation.
A canapes reception for guests was held at St George's Hall and Grand Reception Room, Windsor, ahead of a private family lunch, where more than 100 guests were catered for.
Later the Duke of Cambridge and Prince Harry played in a charity polo tournament in aid of disadvantaged African children.
They played in the Sentebale Polo Cup - an event in aid of Harry's Sentebale charity.
Normal working day
The Duke of Edinburgh treated his birthday on Friday as a normal working day.
The Queen has conferred the title of Lord High Admiral of the Navy on the duke.
On Saturday, the Queen marked her official birthday - she was 85 on 21 April - with the Trooping the Colour ceremony in central London. Prince William took part for the first time.
