Kirby Mallory, deep in the Leicestershire countryside. Fantastic track, and you can get really close too. Get them near the chicanes and they'd be going slow enough for you
I really wanted to go to Donny this week, but I'm off to Bristol for an OcUK meet, so I can't make it. Will be keeping my eye on the Mallory Park timetable though, as it's only 2 miles from me