The Monarch, Camden
Famed indie pub that is now home to the usually excellent Barfly nights promoted by Xfm, the Monarch is the leader in putting on cheap gigs by new bands and rising stars pretty much 7 nights a week. It's also been on the telly a fair bit (even if it was mostly Coldplay and Dermot O'indie) courtesy of the Barfly Sessions spin-off TV programme.
Many of the bands that play here really do go on to great things - The Strokes being the latest band to do it. Listen to John Kennedy's Xfm radio show for details of upcoming gigs.

49 Chalk Farm Road NW1
020 7691 4246
Nearest Tube: Chalk Farm / Camden Town
Nearest Rail: Kentish Town West