Where does David Cameron find the evidence that, according to the European Commission, a Financial Transaction Tax (FTT) would cost "hundreds of thousands of jobs", that "you end up putting up the costs of people's insurance policies, putting up the cost of people's pension policies and actually driving all that activity offshore" and that "it is a good way of taking a lot of tax out of the UK and spending it in Europe" ("Warning comes amid claims Merkel proposed referendum for Greeks", The Herald, May 19)?