I live in Germany so all the tracks I go on are foreign.
We have some good, well organised track days here and one of the best is Prospeed.
http://www.prospeed.de/ . I am at Hockenheim on Wednesday with Prospeed (sponsored by Michellin-free tyres) and will ask if they can translate their website. At the end of the month we're off Mugello, costs for 3 days track time is €419 thats about 284 quid
If your interested I could translate the site for you. Termin means calendar for instance
Threaded Mode