Hi Eddie
(I looked up to see you power past at a couple of hundred feet. ) Height misconseption was at least 500 feet
Thame airport (Haddenham). hardley an airport. its haddenham tow glider launch site.
What are the restrictions there? They only fly as a club at weekends so keep a good distance away and dont fly over the field.
The main areas to watch out for around us are Raf Halton, Benson, Chalgrove,Booker,Oxford,and the Lewknor parachute club.
Simon P