I recently visited Liverpool (but have had flu since! so could not post) and I think this is my Pub of the year
The Philharmonic Dining Rooms Liverpool
this is what Wikpedia says about it
The Philharmonic Dining Rooms in Liverpool, England is situated on the junction of Hope Street and Hardman Street, diagonally opposite the Liverpool Philharmonic Hall. Locally it is referred to as the Philharmonic Pub or simply the Phil. Designed by Walter Aubrey Thomas for the brewers Robert Cain & Company, it opened in 1898. The exterior is in the Art Nouveau style.
By the 1960s, the hotel had become a Liverpool institution. The Beatles used to go there, and John Lennon once complained that one of the prices of fame was “not being able to go to the Phil for a drink” 
2nd of course would be the Vulcan in Cardiff, a different pub altogether, but with a uniqueness of it’s own..
Dave from welshbloggers.co.uk at a recent meet up.