Hi,
I'm based in Walkley just off Bolehill Road. I regulalry have Rabbit manure available if you would like any (I have 4 rabbits).
Ours is a mixture of hay/straw with some recycled paper substrate & of course droppings & wee.
It doesn't take long to break down. And I can drop off to any of the local allotments, as we regulalry pop up to Crosspool / Rivlin Valley etc.
Let me know if you (or any one else is interested). I currently have three bags that have been sitting for two weeks & two bags that are this weeks clear out.
Bests,