Queen's birthday: Gun salute in Green Park London
21 April 2014 Last updated at 14:13 BST
The Queen's 88th birthday is being marked across the UK with traditional gun salutes.
A 41-gun royal salute was fired in Green Park in London and a 62-gun salute was fired from the Tower of London.
In Scotland, gunners from 105th Regiment Royal Artillery have fired two 21-gun royal salutes at Edinburgh and Stirling Castles.
The gun salute at Green Park was carried out by the King's Troop Royal Horse Artillery using 13-pounder World War One guns drawn by 71 horses.