I think you will find that the Councils approach to peeps taking rubble (Other suitable fillers are available) and placing it on to (into) a green lane is oh-facially considered fly-tipping. The reasons, as far as they are concerned are irrelevantWhy would we be fly tipping?
That is why it would be useful for the adjacent land owners to be on-side, if we were to carry out such activities. It certainly would be stooped to upset the local landowners. It might be also necessary to use earth moving equipment - again some thing frowned upon by the local council; in the same way they frown upon peeps with chainsaws clearing blockages unless they have public liability licenses etc. Tis all H&S, don't ya know..