Warhammer world would be cool but I worry that they may "mess us about" e.g. if an official GW event, catering to one of their core games turns up between now and when we all actually turn up, the hall may be closed to us. It will need to be formally discussed with them first, they may not like hordes of specialist gamers turning up? Or is it possible to book the hall at a reasonable price and even use their tables/scenery in an official tournamnet style event? (without it costing a kidney each). The advantage of GW Lenton is Bugman's Bar........ mmmmm..... beer......
Dave