There has been a few in BoT, just not this year.
I've hosted at The Burton Bridge, and the Riverside at Branston. Fab pub in the summer, as the garden looks over the river. They also gave us a function room for free.
Organising only need be a quick call to your chosen pub or place, and say "is it allright if I bring along 30 people to buy beer and food", for them to give you allocated seating, especially if it's early in the week.
If you fancy it, then just say so here and it's yours. Then send off your event to GC.com
Cheers,
Paul