Voter Intentions Post Expense

Conservative - 41% (-2)
Labour - 22% (-5)
Lib Dems - 19 (+1)
Others - 18% (see how that breaks down)

That's the lowest Labour have been since records began. Anthony Wells at UK Polling says about this result:

It is worth considering that YouGov normally give the Liberal Democrats their lowest ratings - if this poll had been carried out by ICM we might very well be looking at a poll with Labour in third place.

The European voting intentions are very interesting to:

Conservative - 29% (-7)
Labour - 20% (-5)
Lib Dems - 19% (-1)
UKIP - 15% (+8)
Green - 6% (+2)
BNP - 3% (-1)
SNP/PC- 4% (nc)

I'm basing swing calculations on what I believe is YouGov's last poll. Either way it's a big swing towards UKIP, BNP haven't benefited from the expense saga as of yet.