You will find all the ones Chris mentioned, contact numbers, plus a few other possibilties (including my favourite in the area - Bangor Irish session) at http://www25.brinkster.com/folkorbit/localvenues.htm.

Also, if you are looking for events in an area, try our page. We are by no mans comlete in our coverage of the UK but we do have links (including the folkorbit one I gave you above) to some pretty good localy maintained events listings there.

Jon