These guys are absolutely great blokes, very approachable, and still have 2 Lightning F6 fighters in taxiable condition (well one, but they are working on the other one...).
They will also have a massive archive of probably very rare Lightning footage on DVD.
You should definately get in touch, and I'm sure that they will be only too happy to have a chat.
Lightning Preservation Group Based at Bruntingthorpe Airfield near Leicester
PS They have recently started to perform simulated Q scrambles from their refurbished Q shed, which is something you may want to film for your programme. Unfortunately, we enthusiasts can't persuade them to take off at the end of their run.
The Lightning is a truly awesome aircraft, even nowadays, and it will make your ears bleed and the ground shake for you.