Courtesy of the Polish Foreign Minister:
Ref Myth No 5 - What percentage of EU directives are generated wholly by the EU and what percentage by the UN and its various agencies? The UK would have to abide with the latter whether or not it was in or our of the EU.
Or did you not read the myth about confusion of the ECJ (an EU component) and the ECHR (not an EU component)?
We would not have to abide by anything set in the EU if we were out of it. The UN does not pass legislation with ref to the laws of the UK