Ok, I have had a nose around and found a great place just outside Silverstone which is pretty central.
If you look at the website, it has a row of Ferraris outside it and all the event rooms are named, Aston, Bentley, etc so motor themed.
We also have Silverstone up the road so we might be able to do Karting or make some use of the venue.
Its very very plush and I am working on a deal for a 3 course meal inc half a bottle of wine per head, all the usual Xmas tat and a disco in a shared room, and a room based on 2 sharing as a twin or double. They want £120 per head but I am trying to negotiate £100 per person. We might not want the meal, so it would be £55 per person per room.
Have a look:
http://www.whittleburyhall.co.uk