My friend is traveling to London in a week, and she'd be happy to get a glimpse of what London music life is like. She's never been to UK before but is a huge fan of “West London folk scene”, i.e. bands like Mumford & Sons, Noah and the Whale and Laura Marling.
Are there any bars or clubs in London one can easily attend (no booking required) with local bands playing nu-folk music? Traditional folk is fine too, although she would rather be excited to hear something similar in spirit to what I cited above.
In New York, I used to hang out in National Underground which had amazing local bands playing every evening for free. Any suggestions from Londoners?