Where are they located? The Helicopter Museum at Weston-Super-Mare or the Army Air Museum at Middle Wallop would be a good start, or are there any local airfields with a helicopter operation (who may well respond favourably to a polite email or phone call)?

The Helicopter Museum  has info on open cockpit days

According to Jarrod Cotter’s book  ‘The Battle of Britain Memorial Flight: 50 Years of Flying’,  Quill displayed AB910 on behalf of Vickers-Armstrong until it was presented to the RAF in 1965. I’m guessing that pre the BoB film there were few opportunities after that, unless he got a back seat ride in G-AIDN at some point?

Hello Katie. Have you tried   Military Aviation – PPRuNe Forums?  A lot of current and past RAF members post there, and I’ve seen a few requests similar to yours in the past.

Re Propstrikes comment that the gear was not lowered, do you have a source for that? The pictures of the recovery I have seen show the starboard u/c down and the port partly  retracted, also two skid marks on the runway. Looks more like a partial gear collapse leading to a runway excursion to my eye.

Mods I hope pasting a link to WIX is ok?

Warbird Information Exchange • View topic – Another incident for the CAF P-51C pilot uninjured

Yes, it is at Duxford, in the ARCO hangar. Now registered as G-WLRS.

That rang a bell, I’m sure I also read a thread (on WIX?) about it, it went into quite a lot of detail. A quick Google came up with this precis, it is the ex TFC example. 

44-12016 N98CF

‘While based in Sweden, in the late 1990s SE-BGK adopted what was thought to be its original Swedish identity as 26158 of Flygvapnet Wing F16.  In 2002 the aircraft was sold to The Fighter Collection becoming “Twilight Tear”, G-CBNM. In 2007, it moved to the USA subsequently becoming N98CF and later, after a legal judgement on its heritage, being painted as “Fragile But Agile”.’

The Strathallan Hurricane G-AWLW was an aircraft ‘restored’ in Canada and imported for the Battle of Britain film., and subsequently bought by the Collection. It was later purchased by the Canadian Warplane Heritage but was completely destroyed in the hangar fire which also claimed a Spitfire IX and Avenger.

According to Thomas and Shore’s ‘Typhoon and Tempest Story’ none were lost on that date – the nearest non-squadron match is DN251 0f 5 Ferry Pilot Pool (ATA) which crashed in bad vis near Banbury, killing F/C W. Mason on Nov 21st, which would be the same day of the week.