This quiet, grown-up space in the sleek, chic Halkin Hotel is ideal for informal business chats and relaxed dates, particularly as the staff don’t bat an eyelid when multi-million pound deals or collections of Ferraris are discussed. There are wines, spirits and cocktails aplenty, but given that it's next to the extraordinary Ametsa with Arzak Instruction, it’s hardly surprising the predominant oeophile accent is Spanish – the pouring white is an Albariño, and the bar specialises in flights of sherries and brandies. And if you’ve missed out on a reservation in the restaurant, you can now nibble on high-class tapas like jamón ibérico, gildas (Basque skewers), ham croquetas, txipirones en su tinta (black ink squid) and merluza con patatas (fish and chips), all courtesy of Ametsa’s Michelin-starred kitchen. The bar is also great for afternoon tea, served with a dash of contemporary elegance.