mushroom compost or similar

Can anyone help with a source for mushroom compost or similar in the North-west area?
I'm reluctant to buy from a UK supplier willy-nilly in view of transportation costs; I also think a local supplier may be cheaper anyway.
Thanks folks
Flora

 

If you can find a local mushroom farm you could buy direct..our local mushroom farm even delivers.

Commercial farms usually get about 3 flushes of mushrooms from the compost.. then they have to start over..thats a lot of compost to get rid of