@ Halcyon days, That would’ve been after May 1968 when the Battle of Britain filming ended at Seville Spain and 27 Buchons & 3 Heinkel 111s were flown from Tablada airbase Spain to Madrid, San Sebastion, Nantes, Jersey, Manston and on to Duxford for filming the UK air sequences. There’s another thread on this website covering the Battle of Britain film.