King's Troop salute Prince Philip in Hyde Park
The King's Troop Royal Horse Artillery fired a 41-gun salute to celebrate the Duke of Edinburgh's 91st birthday.
The salute took place at midday today, led by Parade Commander Adjutant Captain John Gibson RHA.
A Royal Salute normally consists of 21 guns, but this is increased to 41 rounds if fired from a Royal Residence or Royal park.
Prince Philip is 91 years old today
Having been released from hospital on Saturday afternoon the Duke of Edinburgh will be spending his 91st with his family.
Duke of Edinburgh out of hospital in time for birthday
The Duke of Edinburgh left King Edward VII Hospital in London today in time for his 91st birthday.
Duke of Edinburgh could spend his birthday in hospital
The Duke of Edinburgh is still in hospital. He may not be released until after his 91st birthday this Sunday.