If I’d only waited a few days before compiling my list of “startup meetups”, then I could have just borrowed a ready made list from Techcrunch UK - see http://uk.techcrunch.com/2008/11/03/upcoming-startup-events-and-a-techcrunch-uk-eventparty/

Admittedly their list might be slightly more comprehensive than mine… although it doesn’t have (not does it want to have) the techie-only based meetings.