111. Veteran display pilot Ray Hanna (1928-2005) performed the scene where a Spitfire flies under a bridge in France. The scene itself was filmed by the stone bridge at Winston near Barnard Castle and Hanna, a New Zealand-born former RAF fighter pilot and Red Arrows leader, flew his own Spitfire LF.Mk.IX "MH434/G-ASJV" for the sequence. Hanna's son Mark also flew in the production. The series used footage from the 1969 motion picture Battle of Britain for many of the dogfight scenes. Air-to-air filming of the aerial sequences was done with a vintage B-25 Mitchell bomber, Harvard trainer and an Agusta 109 helicopter, all of which served as camera ships for the shoot. The production made use of three vintage Messerschmitt Bf 109s which were actually Hispano Ha 1112 Buchons, a Merlin-powered version of the Bf 109 that was used by the Spanish Air-Force up until the late 1960s. These same aircraft later also appeared in the motion-picture Memphis Belle in 1990. To portray Luftwaffe bombers in the series, two Heinkel He 111 (also Spanish-built versions) were used. An airworthy example was filmed in an aerial battle with a Spitfire (both operated by the Confederate Air Force) in Texas, USA and in the UK a partially dismantled aircraft was used for the filming of the scene where Hornet Squadron visits the crash site of their very first 'kill' in France. The 'crashed' Heinkel, registered G-AWHB, was flown to the UK from Spain in 1968 to be used in the filming of the movie Battle of Britain and later appeared in the film Patton. For the scene where Cattermole and Steele-Stebbing destroy a German rescue aircraft, a vintage Junkers Ju 52 (Spanish-built CASA-353L) was used. Scenes at the 'Chateau St. Pierre' were filmed at Charlton Park, Wiltshire, where the Earl of Suffolk has a private airstrip. The airfield used to represent 'RAF Bodkin Hazel' was the long-disused RAF Friston sited on the East Sussex coast alongside the imposing Seven Sisters cliffs. Some of the exterior filming for the first episode of the series (at Hornet Squadron's original base, "RAF Kingsmere") was completed at South Cerney airfield in Gloucestershire UK which, in 1988, still featured several period hangars and a pre-war control tower. For the French airfield scenes at "Le Touquet", the producers filmed at Cambridge Airport. In an interview in 2010, Derek Robinson, author of the original novel Piece of Cake remarked