The Hightown Crows are probably the band I see most regularly. They are a rockabilly blues band who busk in Portobello Market in Notting Hill every week, and always brighten my weekend up that little bit. It's just occurred to me that I've never actually seen them play indoors.
Yesterday, when we walked past they were covering Living On A Prayer by Bon Jovi. Totally rocked. I love them.
http://www.hightowncrows.co.uk/index.htm
Myspace:
myspace.com/hightowncrows
You can see some of their performances:
http://www.youtube.com/results?search_query=the+hightown+crows&search_type=&aq=2m&oq=hightown+