RNAS St Merryn was constructed during World War 2 with the stone for the runway being quarried from nearby Stepper Point and brought by sea.[1]
There were air raids on St Merryn Airfield and the nearby RAF St Eval on 9 October 1940 resulting in some damage at both locations. Two days later on 11 October there was another air raid on St Merryn. There were no casualties but some damage was caused on the airfield and to nearby houses.[2]