Yes, also good points. It depends what axis you're viewing it on. Heseltine is right-wing in that he was a free-marketeer and libertarian, but doesn't agree with the majority of the right of his party over Europe.

Brexit is a strange situation in terms of left and right wing. At a very broad-brush level it is the centrists who are pro-Europe, and the more right-wing and left-wing are more eurosceptic.