Wellington Barracks is a military barracks in the City of Westminster for the Foot Guards units on public duties in that area. The building is located about 300 yards (270 m) from Buckingham Palace, allowing the guard to reach the palace very quickly in an emergency, and lies between Birdcage Walk and Petty France. Three companies are based at the barracks, as well as all of the Foot Guards bands and regimental headquarters.