from people who want a britpop meetup group:
"I DJ a britpop night called Razzmatazz every 5th Saturday of the month at Black Cat backstage. Septmeber 29th is the next one, so come out and say hello! You will not be disappointed"
i suggest making a meetup group - its worth it to find like-minded people - and then just figure out where to go. if you visit SF you can go to popscene. if youre in nyc - you can go to popscene nyc/club nme. liberation dance party has good stuff but i know when i used to go id say it was more indie based vs britpop. i cant stand mousetrap, but thats just me.
and you can always post to craigslist
i met lots of people into britpop music when i lived in dc that way.