This big, noisy gaff would love to be called a traditional Irish pub, and a home-from-home for every expat in town. But O’Malley’s is just as popular with Brazilians as it is with homesick airline pilots looking for someone to talk to – or more – on a layover. It’s more like one of the chain pubs you find inside London railway stations than a cosy country boozer; but there are beers from Mexico, the Czech Republic and Belgium, and there’s nowhere better to get drunk while watching Irish rugby, if that’s your bag.