Ah.... here's the "who do I vote for" link. Unlike how2vote (below), this one tells me I'm split equally between LibDem and Green (surprised me, rather) with 2% Tory and about 20% Labour making up the rest. On examination of the questions, it's the cloning one that gives you a chance of being Tory whatever answer you give (because it's not a party issue, yet). This site also collects a bunch of extra information, so "I have my suspicions"...