Well I'm just gonna say stuff that other people have said, but hey-ho!
Birmingham was cool and is easy to get to and would be a good place to hold it again (so long as we stay in a different hotel). However it could also be cool to go somewhere different. Manchester is a funky place with loads to do and is very easy to get to (direct train from London, takes about 3 hours). Or indeed anywhere else. Venue is only a minor consideration for a party, I think we've shown in the past that we can have fun pretty much anywhere!
Birmingham was cool and is easy to get to and would be a good place to hold it again (so long as we stay in a different hotel). However it could also be cool to go somewhere different. Manchester is a funky place with loads to do and is very easy to get to (direct train from London, takes about 3 hours). Or indeed anywhere else. Venue is only a minor consideration for a party, I think we've shown in the past that we can have fun pretty much anywhere!