Low Level Bombsight, Mark III use in October 1942. Coastal Command had priority on deliveries and only small numbers reached Bomber Command. The first examples arrived in May 1943 and were fit to Douglas Boston bombers of 2 Group. In 1944 the sight was trialled on the Avro Lancasters of No. 617 Squadron RAF, the Dambusters, who carried out a single low-level attack with them in late 1944. Most examples sent to Bomber Command equipped a small number of De Havilland Mosquito aircraft in No. 627 Squadron RAF (who normally operated as pathfinders) and No. 8 Group RAF (Pathfinder Force). The sight remained with Coastal
RAF Uxbridge May 1936, No. 11 Group RAF was headquartered at RAF Uxbridge under the command of Air Vice Marshal Philip Joubert de la Ferté, who was succeeded by Sir Ernest Gossage in January 1937. The ADGB was reorganised on 13 July 1936, with control of fighter aircraft passing to the newly established RAF Fighter Command, which moved to RAF Bentley Priory. The following day the remaining elements of ADGB became RAF Bomber Command, headquartered in Hillingdon House. Planning for the new 11 Group Operations Room (within what became known as the Battle of Britain Bunker) began in August 1937. Initially it