So this is rather embarrassing, i made the same mistake even the newspapers and probably lots of others made, i was using the abbreviation of EU to mean Europe in general rather than the union.
In other words i should have been saying European and not abbreviating it to EU, apologies.
However that doesn't change that Theresa May wants to withdraw from the European Convention on Human Rights and the jurisdiction of the European Court of Human Rights, as a separate matter from the union stuff, or that the stuff
i said before i started to use the EU abbreviation incorrectly is wrong, or maybe it it is as I'm starting to doubt myself now.