O2 Blueroom

You're walking through the O2's corridors and suddenly you find yourself in a proper cocktail bar—one where the bartenders actually know what they're doing. Blueroom feels like a welcome escape from the arena's usual chaos, all moody lighting and the kind of vibe where people chat seriously about spirit provenance. It's the sort of place you'd stumble into before catching a gig and end up staying longer than planned, nursing something genuinely good rather than a £12 lager. The crowd skews grown-up, which is refreshing given the venue's typical demographic.