Maneuvers of British Armored Division

Malton in Yorkshire, 29 September 1942. Maneuvers of the 42nd Armored Division. On the right is General Sir Bernard Paget (Commander of the Territorial Forces), who takes the top of the two pieces with his greenish color and brown pants of the Battledress. On the left is Sir Anthony Eden (Minister of Foreign Affairs), who takes the complete set of two pieces and has inserted the underside of the jacket inside the pants. British soldiers usually wear the two piece suit of work (Two piece denim overalls), as it serves as an instruction suit work, a combat uniform in summer, or can be worn over the Battledress in winter. The colors vary from a very light brown to a whitish greenish hue. The Denim Tank Suit itself is a whole plethora of color that varies from green to yellowish-green. This suit began to deliver from 1944 onwards, so what the officer wear in this picture is the two pieces, except the one on the right that carries the Battledress jacket. Denim Overalls is defined by Jean Bouchery in the book "The British Soldier" volume one.

Source :
http://www.panzernet.com/foro4/showthread.php?11073-Uniformes-mezclados/page3