how do I hire a track?

[s2ooz]

I wanted to try and gather a whole pile of bikers to a track, say donnington, and have a day out, but I assume they need marshalls, st johns, and burger vans, does anyone (ted?) have any experience of organizing this sort of thing, and what is involved?
I know they do there own "trackdays" but I was hoping for a group discount kinda thing, or a personally organized job.

any info appreciated.