Been given a voucher as a birthday prezzie: visit for 2 to a UK beer festival.

Now, I live near Burton-on-Trent which is obviously the brewing capital of England so I'm not easily pleased in this department.

The potential locations are:
Reading
Bristol
Cardiff
Glasgow
Manchester
Southampton
Lambeth
Edinburgh
Swansea
Swindon

Anyone been to any of these? Alternatively, where would you choose/recommend?