ATS (Auxiliary Territorial Service) doll from the collections of the Imperial War Museum.
Knitted ATS Doll © IWM (EPH 2877)
Further down the same page are 1940s British knitting patterns for more dolls in uniform, including WAAF (Women’s Auxiliary Air Force), WRNS (Women’s Royal Naval Service), sailor, soldier and airman http://www.iwm.org.uk/collections/item/object/30084130