As far as I can remember, the only Airacobras that the RAF got were the P-400s ( which they promptly decided that they wanted no part of

). Those had 12 exhaust stubs on each side a 20mm cannon with a long barrel protruding from the hub, so it doesn't appear to be one of those. The USAAF serial number in yellow is still showing on the tail, so it was probably an American machine.The rest of the insignia appears to have been painted out with a VVS green that doesn't exactly match the OD paint on the fuselage.