Artesian Bar (at the Langham Hotel)

The Artesian bar is on the most famous bars in the world. It was winner of the World's Best Bars for four consecutive years, until this year, after a mass exodus of staff for one reason or another, it dropped off the list completely. Rather than hang their heads in defeat, the new team have revved it up a gear, and brought a new menu based on innovation and perception to the table. While the Langham is associated with traditional British charm and service, the Artesian has veered off on a rather wacky tangent. The new menu offer cocktails served in a fluffy cloud dotted with fairy lights, or a martini in a broken, edible martini glass. The presentation might jar a little with the Langham's old-school vibe – the fluffy cloud is a little more Cocktail Trading Company than hotel bar – but, it's delicious. And hey, sometimes it's good to loosen up your tie...