Unless there are a couple of people doing this, it sounds like the one offered by Aeros at Gloucestershire (Staverton) airfield. They posted a few weeks back, got a gentle cuff round the ears for advertising, then stony silence. Someone tried to set the ball rolling again, but again, no info. Try them on 01452 857419, or write at Gloucestershire airport, Cheltenham, Glos. GL51 6SP.
Haven't checked for further info, but the URL is
http://www.aeros.co.uk