I need your help.

I'm thinking of organising a big party later in the year to celebrate (if celebrate's a suitable word) my recovery. It'll be my way of thanking everyone who's helped me since the accident and possibly also of raising a few quid for MAG. I need a venue capable of holding several hundred people within a hour or so's reach of London. There needs to be accommodation either on site or nearby.

So, I need suggestions for the following:
1. Venue
2. Caterers
3. Band/entertainment

If you can pull strings with a minor royal to let me borrow one of their palaces for the night or can persuade U2 to perform for free so much the better.

All suggestions gratefully received via e-mail or the message board.