That was my assumption also (besides, I've learned to actually like room-temp beer - must be my English heritage.
I find both to be true. For me it depends on the beer. A guiness can be enjoyed warm but a regular miller or budwieser has to be cold.
The appropriate serving temperature for English beer is cellar temperature (about 55-60 deg. F). Unless you keep your house pretty cold...
Now there are plenty of places in the summer that serve the beer a lot warmer than they should, mainly because many pubs still don't have refrigeration in the cellar. But the beer does go bad a lot faster that way. (Cask conditioned beer is fragile stuff.)