You're about 8 years too late to find any breaks focused type parties. Breaks had the first heyday that crashed once everyone started associating it with Prodigy and Chemical Brothers, then got big again when Meat Katie, Rennie Pilgrem, JDS, Plump DJs ect were putting out good work. It's in a bit of a lull right now while the scenesters froth over electro and the breaks producers try to cash in on it.
You'll still find sporadic regular nights, like Hexadecimals Spectrum series, but breaks has never really been big enough to regularly command it's own parties, unless you're planning on moving to Florida I guess....but that's it's own style of breakbeat.
The cool thing about it is that it can be more versatile than most genres, so you'll often find one or two breaks guys sandwiched in between house and techno at one party, underground hip-hop and idm at a second, or dubstep and jungle at another. There's even industrial variants, and really techy breakbeat subgenres have always fit in well with ebm tracks, so you could potentially hear something along the lines of breaks at a place that regularly does goth/cyberpunk nights.