First Past the Post means the Greens will get no more than 1-2 MP's at absolute maximum.
And that's too many - have you really looked at some the Greens policies? They're bloody mental.
Engineering a recession to balance out inequality, saying that the poor in India are better off than the poor in the UK because "they always expected to be poor" (direct quote of the Green Leader), and wanting to disband the Army are merely a few highlights of a fantastically dumb manifesto.
That's because no student in their right mind would vote UKIP. UKIP will get the third highest amount of votes, but because of FPTP they won't get more than 4-5 MP's.
Labour will get the most seats (but probably not enough for a majority), then the Conservatives, then the SNP, then the Lib Dems, DUP, UKIP, Sinn Fein, Plaid Cymru, SDLP and finally the Greens.