I have mine removed and spread on the farmers maize field three fields away, takes two big square muck spreaders to get rid off, but costs around £60 - ie , £30/hr for farmer to come and load, move and spread (different farmer to land owner) works a treat, makes a very tidy job of moving, never leaves any mess either in my field or on the lane, and maize field owner very happy for extra fertiliser worth speaking to land owners locally if you know them, the guy that spreads the muck is a local farmer who does some contracting work on the side so everyone wins
ps, this is north shropshire - so may be a little less pricey that down south