Mudlarking Manchester UK?

I used to love mudlarking with my dad when I was a kid, we still have a lot of the old bottles we found.

I am from Manchester UK and am looking to get back into this as an adult, massive interest in history and after spending years just watching mudlarking videos, I wanna give it a go again. I understand you need a permit etc thing is, I don't drive, are there any places to go mudlarking in Manchester?

When I would go with my dad late 1990s early 2000s, we didn't have a permit or anything and mostly did it around the old farms/ slag heaps near where we live. Unfortunately they've now been turned into a nature park, so no digging there anymore.

Any advice or suggestions etc would be amazing!

I did try to Google but mostly got stuff for London Thames. I don't mind travelling via a train or two but London is a bit far and would require a hotel stay.

Thanks