The Porterhouse, 21-22 Maiden Lane, WC2E 7NA – http://www.theporterhouse.ie/bars-london-coventgarden.php – is the London outpost of Dublin’s Porterhouse Brewing Company. It is reputed to be the largest pub in London, with 12 different levels, and there’s usually live music in the basement.
Being Twixmas, it’ll probably be a lot quieter than a normal Saturday night, so we shouldn’t have too much trouble finding a suitable area on the ground floor. The nearest stations are Charing Cross, Covent Garden and Leicester Square.
For anyone interested in staying out a bit later, the Blues Bar – http://www.aintnothinbut.co.uk/ – which is almost next door to The Blue Posts, is open until 2am (but please note that there is a modest charge on the door after 8.30pm on Friday & Saturday nights).