I would suggest a ring round of flying clubs around London. Most actresses live close to London so will fly or have learnt to fly nearby. Suggest calling Wycombe Air Centre (now part of Cabair)/ BA Flying Club at Wycombe Air Park, West London Aero Club at White Waltham and Cabair at Elstree, Denham, Blackbush, Cranfield and Biggin Hill. They will know. I can't think off the top of my head, I know Christopher Reeves did some flying at Booker Gliding Club and I know that Bruce Dickinson (Iron Maiden) did some flying at Wycombe Air Centre. There have been others but I just can't think! But if I was trying to find out, they'd be the schools I'd be calling.