Would it be an idea to put links to the map in your OP so it's easy to find?
Yes (so people can see if a recycle place they've found has already been listed/mapped).
But as well, pop link in the(your) primary list thread OP, near/at the top. And a picture (eg image of map, which you can replace/update every so often)) to feed the algorithm. Super well done
@annedonnelly Bravo!
This endeavour is a magnificent example of knowledge assembled and made available in an intuitive accessible way. If a random (many search engines available) searches for 'bike (recycling) charity' (other search terms are available) it needs to be (close to) top of the list. And will pull randoms across into CycleChat too: with who knows what benefits.