Many thanks all for your contributions - interesting to hear that EP465 apparently never left the UK! Even the colour scheme of the aircraft (whichever aircraft it was that Geoffrey Wellum flew during Pedestal) is open to speculation, as some of the Spitfires which were delivered to Malta wore a dark blue paint scheme. Some of them seem to have had squadron codes applied before delivery, others to have had none until arrival on Malta. From First Light, I'm pretty sure that Wellum and EP465 ended up on 1435 Sqn, but I can't source any pics of that unit's aircraft which might provide clues.