Choice of 4 - in order of proximity Nottingham (EGBN), Derby (EGBD), Leicester (EGBG) and Tatenhill (EGBM).
Nottingham is nice, though not that easy to find by road.
Derby has shortish grass runways and is very small; not sure how they'd cope with a a large gathering.
Leicester is good, though a bit awkward to get to from the motorway as it's the wrong side of the town.
Tatenhill is really nice...I would say that, as I work there. But again, a bit of a drive from the motorway system.
I'd be happy with any of them.