I think the legislation is based at the refinery level and not even at specific fuels its not at the pump so there is plenty of wriggle room
Here is the link that has increased my happiness levels by 50%
https://www.esso.co.uk/fuels-faqs
took a bit of finding but as they say its always in the fine print....
Here is the link that has increased my happiness levels by 50%
https://www.esso.co.uk/fuels-faqs
took a bit of finding but as they say its always in the fine print....