Britains Steepest Road?

I saw this on the BBC about a road which was at a 40% angle in Harlec, Wales... https://www.bbc.co.uk/news/uk-wales-45420155

You know what?  I think Nottingham has a contender to beat it, if it counts... Newfield Road.

Specifically the curve at the western end of that road, it's immensely steep, very short and I believe carries you up around 24 meters in around 60 meters of distance which is 40% in my book.

There's also a road I don't know the actual name of in Gedling (which my driving instructer used to torture me doing uphill starts) he called it "Big Bertha".