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 Hemswell Bawtry in 1987 and entire Married Quarter sites also nearby at RAF Scampton, RAF Finningley and RAF Cranwell. Throughout the years of operation, RAF Hemswell's mascot and motto were a large weasel rearing-up on its hind legs ready to strike and the words "Bold and Tenacious" emblazoned over (or under) it. Hemswell was used as a substitute for RAF Scampton in the ground-based filming of the 1954 film "The Dam Busters" as the wartime layout of both Scampton and Hemswell was similar in many places. The film "Night Bombers" remains the best known filmed record of what RAF Hemswell looked