nyaos says about Barney's:

Barneys is the only place to be on those long summer nights in London. It is a huge patio, great atmosphere, and they have a lot of drinks on tap. They have lots of tables, and it's hard to find a seat on the weekends. The line up sucks on the weekends, but they let you in pretty quickly. Most ppl go religiously to Barneys because its the only place to be in London.

Reported