The Myriad in Manchester mostly has magic tables - I think they moved all their terrain to their Amherst location.
There's also Game Castle in Londonderry which has a ton of gaming tables (built with terrain and texturing!) and loads of terrain. I haven't been in probably a year but when I used to go there were usually players on Thursday nights and Saturdays (also they often had tournaments on Saturdays)
The Myriad Games in Amherst is the usual spot I go to, and they often have players on Saturdays (they host an escalation league there on Saturdays, last time I checked)
I'm out of commission for a little while due to wrecking my car Memorial day weekend BUT when I'm back on the road I'd love to set up a game with you! Fair warning though, I play Grey Knights >