The site allows you 1,000 characters. If we want to keep Europe in the EU, it is important that as many people as possible write to him. Feel free to adapt/improve/be inspired by/ignore what is written below, but do write:
Mr Cameron, you have so far always put the interests of the Conservative Party before those of your country. If you do not want to be remembered as the worst Prime Minister this country has ever had, that needs to change now. In order to stop the dreadful damage that is already happening to our economy, you need to put a motion before Parliament, saying that the UK will be remaining a member of the EU. MPs are representatives, not delegates. They are not bound by a referendum result that was won by systematic lying from the Leave campaign. If we had been seeking approval to hold a one-day strike, the government would have refused on the grounds that the approval of less than 40% of the electorate was insufficient. And yet you consider it is enough to take us out of the EU, and inflict all manner of unnecessary horrors on us! Even Nigel Farage has admitted that a 52-48 margin is too narrow to be considered decisive. At the v least, we deserve a 2nd referendum - this time a fair one.