Park and Air Chief Marshal Hugh Dowding from their commands on the grounds that they had mismanaged the Battle of Britain. After Park was ousted, Leigh-Mallory took over 11 Group. 12 Group still continued its assignment of defending the Midlands and supporting both 10 Group and 11 Group. Group Headquarters moved to RAF Newton on 12 December 1946 and the operations block at Watnall was closed. Group HQ then moved again on 14 August 1959 to RAF Horsham St Faith. It was disbanded on 1 Apri l963 and replaced by No. 12 (East Anglian) Sector, it moved to RAF Neatishead on 29 May 1963. On 30 April 1968, as the new Strike Command came into existence, 12 Group passed into history when No. 12 Sector began Sector South within No. 11 Group RAF. Commanders The following officers had command of No. 12 Group: 1918 to 1919 1 April 1918 Brigadier-General H D Briggs 1 May 1919 Brigadier-General F R Scarlett 1937 to 1963 1 April 1937 Air Vice-Marshal J H S Tyssen 4 December 1937 Air Vice-Marshal T L Leigh-Mallory 17 December 1940 Air Vice-Marshal R E Saul 29 November 1942 Air Vice-Marshal J O Andrews 1 June 1943 Air Vice-Marshal R M Hill 22 November 1943 Air Vice-Marshal M Henderson 1 January 1945 Air Vice-Marshal J W Baker 5 May 1946 Air Vice-Marshal T C Traill 17 November 1948 Air Vice-Marshal G Harcourt-Smith 1 June 1951 Air Vice-Marshal R L R Atcherley 13 November 1953 Air Vice-Marshal W J Crisham 25 June 1956 Air Vice-Marshal H P Fraser 1 August 1958 Air Commodore C H Hartley (Chief of Staff as acting AOC) 1 January 1959 Air Vice-Marshal J R A Embling 20 July 1959 Air Vice-Marshal C H Hartley 1 June 1961 Air Vice-Marshal R N Bateson See also List of Battle of Britain airfields List of Battle of Britain squadrons References Citations Bibliography 012 Royal Air Force units and formations of the Battle of Britain Military units and formations established in 1918 Military units and formations in Nottinghamshire Organisations based in Nottinghamshire 012 Group RAF 1918 establishments in the United Kingdom