Station guard blowing whistle and signalling to a locomotive, April 1964.

Riot police guarding the Conservative Party Conference, 1981.

Guard showing right away light, Bishopsgate, London, July 1962.

Women Home Guard at Colwyn Bay, Wales, World War Two, December 1944.

Station guard blowing whistle and signalling to a locomotive, April 1964.

'London - The Horse Guards', LMS poster, 1923-1947.

Coldstream Guards outside Buckingham Palace, 19 December 1938. Photograph by Reuben Saidman.

Guard at Leeds Station, 2001.

Two members of the Home Guard with their ri

Guard at Leeds Station, 2001.

'The Railway Guard', 1870.

'Fencing: Half Circle Guard - St George's Guard', 1806.