The Scottish element that was feeling that way has sort of showed up in part in relation to the Scottish Nationalists. Although there are a couple of left-wing independents in the Assembly there.
I have no idea about Wales to be honest.
NI is dominated by sectarian issues.
Turnout for the EP elections is so low in general it's hard to separate out effects. 39% in 2004, but 28% in 1999. One could argue about the Green Party or the fact that the Tories + UKIP did so well...
London - I don't know the constituency breakdown well enough, but it looks to me like the effect is there somewhat.
