607 Squadron was formed on 17 March 1930 at the then new airfield of RAF Usworth, County Durham[6] as a day bomber unit of the Auxiliary Air Force (AuxAF).

Having achieved their first success downing a DO 18 flying boat in the North Sea and still equipped with Gladiators, the squadron was deployed to France as part of the Air Component of the British Expeditionary Force in November 1939.

Following the British withdrawal, the squadron returned to the US and served throughout the Battle of Britain, firstly in the air defence of the North East of England then on the South coast with 11Gp.

In October 1941, the Squadron moved to RAF Manston and remained there undertaking anti shipping operations and cross channel fighter sweeps until 1942.

During this period, 607 became the first unit to operate the Hurricane in the fighter bomber role and using their "Hurri-bombers" destroyed or damaged several enemy support vessels during the German capital ships "Channel dash!"

It re-equipped with the Spitfire Mk.VIII in March 1944, and flew these in support of XIV Army, including the Imphal and Kohima actions, until disbanding on 19 August 1945 at Mingaladon in Burma.