Balloon Centre No. 31 Group (1 April 1939 to 13 November 1941), Birmingham No. 32 Group headquartered at Claverton Manor, Claverton, near Bath, Somerset (1 March 1939 to 15 November 1944) No. 6 Balloon Centre (earlier in 33 Group) No. 11 Balloon Centre No. 13 Balloon Centre No. 14 Balloon Centre No. 33 Group headquartered at Parkhead House, Abbey Lane, Sheffield, Yorkshire (1 March 1939 to 4 September 1944) No. 5 Balloon Centre No. 6 Balloon Centre (later in 32 Group) No. 8 Balloon Centre No. 9 Balloon Centre No. 10 Balloon Centre No. 15 Balloon Centre (earlier in 34 Group) No. 16 Balloon Centre No. 17 Balloon Centre No. 34 Group headquartered at Tor House, Corstorphine Road, Edinburgh (7 April 1940 to 19 July 1943) No. 15 Balloon Centre (later in 33 Group) No. 18 Balloon Centre The dates indicated give the periods for which each group existed as part of Balloon Command. No. 30 and 31 groups also existed in World War I as part of different formations. The balloon centres in turn consisted of balloon squadrons which were numbered from 900 to 994. See also Royal Auxiliary Air Force List of Royal Air Force commands References External links Balloon Barrage Reunion Club Website - Development of Balloon Command Balloon Command Military units and formations established in 1938 Ballooning