Guardsmen practice their drill for the Trooping of the Colour.
Full title reads: "London. 'The World's finest Military Spectacle' The Guards, at early rehearsals, are already 'perfect' for the great 'Pageant of Scarlet & Gold' in honour of the King's birthday."
Military band of one of the Guards regiments marches on parade ground. In the background are ranks of troops.
(Sound track runs out)
Troops with rifles join the band in their practice drill display. (Sound track returns) Picture runs out for a short while.
More shots of the Guards marching. Closer shots of some of the troops as they march past. More long shots of the marching.
(Natural sound track only - No commentary)
NB Presumably this is a practice for the Trooping of the Colour at Horse Guards' Parade.