Aviation Traders Limited (ATL) was a war-surplus aircraft and spares trader formed in 1947. In 1949, it began maintaining aircraft used by some of Britain's contemporary independent airlines on the Berlin Airlift. In the early 1950s, it branched out into aircraft conversions and manufacturing. During that period it also became a subcontractor for other aircraft manufacturers. By the end of the decade, it was taken over by the Airwork group.