I accidentally volunteered to arrange this. Now, having left my diary at work, I'm not 100% sure when I'm free, but nonetheless I can still organise things, so:-
Assuming people prefer a non-school night, Fridays and Saturdays seem most useful. Poll for date at this link
http://doodle.com/poll/gav9znp7gvvdnew5
Venue debate in the comments please - gembo has suggested Diggers.
ETA: I think I managed to post this under "infrastructure". Which technically pubs could be considered?