You've been here often enough that I'm sure you don't need telling. But just to make absolutely sure; for traditional British beer/real ale in a pub, you should be looking for something that comes out of something that looks like these. Probably not present in hotel bars unfortunately.

Realised after I posted that your link was specifically to the little desktop version, mine's the 60cm long Classic. Spending the afternoon on Manchester Metrolink (trams) at St Peter's Square.

Being in the UK I can't particularly answer your question, but I can show off about the British ones. Today I'm in Stirling (without leaving my study in Manchester). Only got it a couple of weeks ago for my birthday, hanging it on the wall is a job for the holidays.