The Queen, Prince Philip, Prince William, Kate Middleton and other members of the royal family gathered at St Paul's Cathedral in London for a National Service of Thanksgiving on Her Majesty's official birthday. The church service is a double celebration for the Queen's 90th birthday and the Duke of Edinburgh's 95th. Prime Minister David Cameron will read from the Bible at the service. Naturalist David Attenborough and Paddington Bear creator Michael Bond — who both turn 90 this year — will also take part.

Queen at 90
The Queen and Prince Philip wave before entering St Paul's CathedralStuart C Wilson/Getty Images
Queen at 90
The Queen and Prince Philip arrive at the service of thanksgivingToby Melville/Reuters
Queen at 90
Guests curtsey as Her Majesty walks up the aisle of St Paul's CathedralBen Stansall/AFP
Queen at 90
Prince Harry waves to the crowds as he arrives with Kate MiddletonPeter Nicholls/Reuters
Queen at 90
Prince William and Kate MiddletonBen Stansall/AFP
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Prince Charles and CamillaBen Stansall/AFP
Queen at 90
Prince Andrew with his daughters Eugenie and Beatrice and his brother Prince EdwardPeter Nicholls/Reuters
Queen at 90
Prime Minister David Cameron, his wife Samantha and Chancellor of the Exchequer George Osborne take their seatsMatt Dunham
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John and Sally Bercow chat to Jeremy CorbynMatt Dunham
Queen at 90
Zara Phillips and Mike TindallBen Stansall/AFP
Queen at 90
Former Prime Minister Tony BlairPeter Nicholls/Reuters
Queen at 90
The Lord Mayor of London Jeffrey Richard de Corban Evans (R) arrives at St Paul's CathedralPeter Nicholls/Reuters
Queen at 90
Yeomen of the Guard line up at a service of thanksgivingToby Melville/Reuters
Queen at 90
A Yeoman of the Guard arrives at St Paul's CathedralToby Melville/Reuters
Queen at 90
Members of the armed forces prepare for the service of thanksgivingPeter Nicholls/Reuters
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Mayor of London Sadiq Khan and his wife SaadiyaPeter Nicholls/Reuters
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Fellow 90-year-old David Attenborough arrives at St Paul'sPeter Nicholls/Reuters
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An armed police officer patrols outside the cathedralPeter Nicholls/Reuters
Queen at 90
People gather outside the cathedral to pay their respects to the Queen and Prince PhilipPeter Nicholls/Reuters
Queen at 90
Well-wishers wait for the arrival of members of the royal familyPeter Nicholls/Reuters
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Sophie, Countess of WessexBen Stansall/AFP
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Princess AnneBen Stansall/AFP
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Autumn Phillips and Peter PhillipsStefan Rousseau
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Prince and Princess Michael of KentBen Stansall/AFP
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Sir David Attenborough speaks during a service of thanksgivingBen Stansall/AFP
Queen at 90
Archbishop of Canterbury Justin Welby speaks during a service of thanksgivingBen Stansall/AFP
Queen at 90
The Queen and the Duke of Edinburgh leave St Paul's Cathedral along with the Archbishop of CanterburyToby Melville/Reuters
Queen at 90
Her Majesty is pictured at St Paul's CathedralStuart C Wilson/Getty Images
Queen at 90
Queen Elizabeth II smiles as she leaves a National Service of ThanksgivingStuart C Wilson/Getty Images
Queen at 90
The Queen and Prince Philip leave St Paul's CathedralStuart C Wilson/Getty Images

The Queen, the oldest monarch in British history, turned 90 in April, but official celebrations are always held in summer. Three days of events are scheduled from Friday to Sunday to mark the occasion. On Saturday 11 June, the Queen will attend the traditional Trooping the Colour parade, followed by a lunch on Sunday for 10,000 guests on the Mall.