Yeah, I went to Elrow London a few weeks ago. Now, even though London parties are obviously based in the UK, many of them are normally VERY European. Saturday night at fabric for example, or the recent Luciano event in Brixton where Brits were the minority. But Elrow was full on British, not a foreign accent in the place.
Totally different to the one in Barcelona where me and my mates were literally the ONLY Brits in there (and btw, was one of the best clubs I've ever been to). Not tried Ibiza yet