I'm in and don't really mind where it is.
Grafham would be quite good because there's a big car park and so e nice roads around there. There's a Cafe in the main car park or The Wheatsheaf pub in the village or there's the Boat club which also has a nice cafe and car park.
Grafham is just off the A1 and A14.
Apart from a social gathering, it might be good if you have any niggles with your car that we can all share experience of. Be warned though, you may come away having already spent your next 2 months wages on Mods!
GT 3.2 V6 - Q2, KONI FSD & EIBACH PROKIT, GTA REMAP, MICHELLIN PS3's, BMC CDA
159 SW 2.4JTDM TI - ALFATUNED, WIZARD BACK BOXES, KW V3 COILOVERS, NOKIAN WR A3/MICHELLIN PS3, PCA DYNAMICS ALIGNMENT.