Gents
Bedford is strict, I have been thrown off even on a LoT day. They say that there is a direct feed straight back to the local council for the 3 drive-by noise meters.
The problem was in the 7, the Zed passes the test easily, seen over 50 different Elise-Exige there so would be surprised if Kev would fail.
Static is quite easy to pass but drive by is hard to fool, and backing off is you only option
If in doubt, any "local" MSVR track will do a noise test before you book.
Bedford is worth it in a Zed as long and sweeping bits so you will keep up with the lightweight boys.
PS also done many track days with EasyTrack and they are great too so big thumbs up.