One of the oddest features of the cabinet majority for staying in the EU is that almost no one in it admits to being a Europhile. How is it, then, that the very last-century ideas of Edward Heath, Ken Clarke, Michael Heseltine and Chris Patten can still exercise so much power over those who have so strongly and, in some cases, consistently criticised the EU in the past — Philip Hammond, Theresa May, Michael Fallon, Sajid Javid, Oliver Letwin, Liz Truss, Stephen Crabb, and, of course, David Cameron himself? Obviously one factor is that Tory MPs have found it convenient in...