Our council operates a Garden Waste Collection Service fortnightly via large brown wheelie bins; after the brown waste is processed the surplus is offered free. Now in no way is this compost, it is a carbon rich humus with no nutrient value intended for use as a mulch or as a soil improver, and by golly used as such it is brilliant!
Hertfordshire is clay and flint
this stuff breaks the soil up beautifully and turns the clay soil dark and manageable.
This material used to be delivered by our council to our allotments free, but as so often happens rising costs have curtailed this service; however I am more than happy to go and shrink their heap.