Bristol UAS was formed in February 1941 and acted as an Initial Training Wing of an Officer Cadet Training Unit for the remainder of the war, with flying limited to air experience flights in passenger aircraft. The Squadron disbanded in July 1946 but was reformed in November 1950 as a unit of Home Command equipped with four Tiger Moth T2s. The flying base was established at Filton where it remained until March 1992, moving temporarily to Hullavington and then to its present home of Colerne in 1993. The Tiger Moths were soon replaced with Chipmunk T10s which were flown until January 1975 when the squadron reequipped with Scottish Aviation Bulldog T1 aircraft. October 2000 heralded the change onto another new aircraft, the Grob Tutor T1.
The galleon on the Squadron Badge is part of the arms of Bristol and therefore alludes to the location of the unit while the Latin motto "Audentitor Ito" means "Forward more Valiantly". The Squadron maintains close links with the former No.501 (County of Gloucester) Squadron Royal Auxiliary Air Force which gives us our 'Boar's Teeth' markings.