No. 5 Group, Royal Air Force Bomber Command: formed on 1 September 1937 at Mildenhall; Group Headquarters at St Vincents Hall, Grantham from October 1937, and at Morton Hall, RAF Swinderby from November 1943; disbanded on 15 December 1945 (Wikipedia, No. 5 Group RAF). Its stations were organised in Bases, such as 54 Base at Coningsby.
Unit Accident Records: 5 Group No. 5 Group RAF RAF ()