Lockheed Factory Serial 426-5070 Lockheed Factory Serial 426-5153
Fifty-two P2V-5s were delivered to the Royal Air Force beginning in 1952. Designated Neptune MR.1s, the aircraft were delivered with nose, dorsal and tail turrets. 27 aircraft were later modified by Scottish Aviation Ltd. when the nose and tail turrets were replaced with the clear nose and MAD. The Neptune entered service with 217 Squadron and would also equip Nos. 36, 203 and 210 Squadrons. Intended as a "stop-gap" replacement, the Neptunes were replaced by the Avro Shackletons beginning in 1956. No. 217 Squadron was the last to relinquish its P2V-5s in March 1957.