I popped into City Bloc (in Leeds) last week and can highly recommend it.
It’s got three bouldering areas – one vertical in parts and slabby in others, one which is vertical and/or overhanging (quite cheeky in parts) and the third is quite sporty and competition-orientated.
There’s also a training room, a changing area and, perhaps most important of all, a good cafe.
It’s easy to get to as well (it’s five minutes off the M621), the only oissue is that there isn’t much parking.
All-in-all, it’s a lot of fun.