Thanks. Slightly wary of the 'best in Bachata, Cuban and L.A Salsa, Reggaeton & everything in between!' line, which in my experience means wall to wall reggaeton.
Someone mentioned http://www.oceanaclubs.com/brighton/event/82167/salsa-brighton-%26-lf-fiesta, which is closer to me, but sounds still less salsaey - though I'm not quite sure from the text if LF Fiesta and New York Disco are two different rooms, which might mean one's a bit more dancer-friendly. Did she ever mention it?