Hi Yorick - welcome to London. You haven't said which area you are staying in, please tell me it's not Earls Court. You can't swing a cat down there without hitting an aussie or an enzedder.
As Charlie says, the pub I invited you to is in North London rather than 'up North'. You can see it here:
http://www.wheatsheaf.freeserve.co.uk You're welcome anytime. I can't offer anything other than alcohol and conversation. I'm running a charity quiz night next monday or alternatively there is a 'plugged/unplugged' night on the third tuesday of every month - see
http://www.redroad.co.uk/acoustic/wheatsheaf People bring their instruments & perform. It used to be called acoustic night but they have changed the name to accomodate electric guitars and violins etc. I have to say that I've always found it a bit 'twee' apart for the girl on the electric violin - very Vanessa Mae.