"Just one point is we can't make a law that only affects the UK without it being OK with Brussels... I could go on but don't have the time. I'm still solidly for leave"
You don't know how untrue this is??
FYI EU regulations are pass by the Parliment and Council, so directly elected MEPs vote on it, and then National governments vote on it.
Afterwards, the national parlimenta write the regulation into their own laws. So every country has a choice whether to implement each EU regulation or not, and sometimes they get punished for not applying an EU regulation...
But today, you just have a tonne of Laws in the UK, which your MPs will have to repeal one-by-one. Or more likely just ignore, because they don't care...
Also, the Council of Europe (which has 47 members, and has nothing to do with the EU) pushes for things like banning the death penalty (which has lead to no death penalty in Russia...) and signing up to a European Court of Human Rights.
The UK seperately signed up to the ECHR, and leaving the EU doesn't change this international obligation.
Also, the good friday agreement (actually two agreements, one signed between the UK and Republic of Ireland, and the other signed between major political parties in NI) stipulates that the UK guarentees all citizens of Northern Ireland their rights under the ECHR (European Convention on Human Rights)
So the one deal which brought peace to Northern Ireland includes enforcing ECHR decisions. That is an international obligation which lead to peace withon the UK... Please don't vote to leave it.