It's 33.53%, with 1,763,025 votes out of an electorate of 5,257,624. See here. Just under 4 percentage points lower than last time (2004) but over 10 percentage points higher than in 1999.
8 of us are off to various counts this afternoon and evening (the counting is being done in each of the 32 London boroughs).
As a quick guide to our and other minority party candidates (well, more minority parties than others since, with 66.5% abstaining all parties are minority parties), and in case anyone wants to organise a sweepstake on how many votes we'll get, here's some figures:
2,5% 44,076 (to save deposit)
The only forecast I'm prepared to risk is that we'll get more than the 846 obtained by the candidate of the Weekly Worker in 1999. This time, incidentally, they are saying Vote Labour. I'm sure Labour will be grateful for any extra votes on offer.