Artesian at langham hotel portland place. Expensive but world-class. £16-18 per drink. Book ahead or wait til 10pm.

Connaught bar on carlos place mayfair. Classic cocktails done perfectly. Martini trolley is theatre but genuinely good. £18-22 cocktails worth it.

69 colebrooke row legacy continues at nearby venues. Molecular cocktails that actually taste good. £14-18 range near angel tube.

Skip anything in shoreditch with 'craft' in the name.