If you fancy a change from the normal circuits then Blyton Park has trackdays for between £79 to £89 with a 105db limit. Link here BikeDays.co Bike Trackdays| UK Bike Track Days | Never done a day with this organiser and the track isn't Cadwell or Donny, but I have done a (more expensive) day here with BritishSuperBikeSchool and it is a reasonable track with OK facilities. If you want instruction from a BSB rider then BSBS may be the answer as they have Dan Linfoot as an instructor this year. And no I am not on commission, just thought it may be helpful
I went to their very first bike track day that focused events ran a couple of years ago..... It's a ok ish circuit based on a old airfield (very basic facility's)
