All Bar One Greenwich

You're heading to a gig at The O2 and you've got time to kill — this is exactly where you want to be. All Bar One sits right in the O2 complex, so you're not battling crowds on the Peninsula or hunting for somewhere decent to grab a drink before the main event. The wine selection is genuinely solid (not just the usual suspects), and the cocktail list doesn't mess about either. It's the kind of place where you can actually have a conversation, sip something proper, and feel like you've stepped somewhere a cut above the typical arena bar experience.