This live feed is at Horse Guards Parade for the 2011 Trooping of The Colour:
Trooping the Colour Live
Since 1748 Trooping the Colour has also marked the official birthday of the British Sovereign. It is held in London annually on the second Saturday in June on Horse Guards Parade by St. James's Park, and coincides with the publication of the Birthday Honours List. Among the audience are the Royal Family, invited guests, ticketholders, and the general public. The colourful ceremony, also known as "The Queen's Birthday Parade", is broadcast live by the BBC.
The Queen travels down The Mall from Buckingham Palace in a Royal Procession with a Sovereign's Escort of Household Cavalry (also known as "Mounted Troops" or "Horse Guards"). After receiving a Royal Salute, she inspects her troops of the Household Division, both Foot Guards and Horse Guards. The King's Troop are also in attendance. Each year, one of the Foot Guards regiments is selected to troop their colour through the ranks of guards. Then the entire assembly of Household Division conducts a March Past around the Parade past the Queen, who receives their salute from the Saluting Base. (The Mounted Troops perform a Walk March and a Trot Past, and the King's Troop rank by with their guns, which are their colour.)
The music is provided by the Massed Bands of the Foot Guards and the Mounted Bands of the Household Cavalry, together with a Corps of Drums and occasionally pipers, totalling approximately 400 musicians. On return to Buckingham Palace, the Queen watches a further march past from outside the gates. Following a 41-gun salute by the King's Troop in Green Park, she leads the Royal Family onto the palace balcony for a Royal Air Force flypast.