RAF Roborough began when the Air Ministry started to use Plymouth City Airport for exercises between the RAF, Royal Navy and the British Army.

The Royal Navy started to use the airport in the late 1930s and was renamed RNAS Roborough however on 1 May 1942 the site was taken over by the Air Ministry for Royal Air Force use primarily for RAF Coastal Command.

247 Squadron RAF between 1 August 1940 and 10 February 1941 flying the Gloster Gladiator II before moving to RAF St Eval on 10 February 1941 however after seven days the squadron moved back to Roborough flying the Hawker Hurricane I before moving out for the last time on 10 May 1941 when the squadron went to RAF Portreath.

[3] In 1942 the site was taken over by the Royal Air Force for Coastal Command Duties with No.

691 Squadron RAF forming at the airfield on 1 December 1943 flying Hurricane I's, Boulton Paul Defiant I's, Airspeed Oxford I's and Fairey Barracuda II's before leaving on 21 February 1945 moving to RAF Harrowbeer.