The UK is not governed by the eu.
The UK has control of 99% of its finances.
The UK has its own sovereign parliament, which is too powerful for brexiteers because it stops the PM doing anything he likes.
The UK does pool its regulations and rules with the EU to benefit from standardisation and a market of 450 million people.
Many of those regulations are from British standards.....which other nations have to abide by.
Does durhamplumber have any other ideas on Brexit benefits, as he has failed on this one