Soil and stones
Soil can be taken to 7 of north London's reuse and recycling centres (RRC) (opens in a new window) - that is all sites excluding Barrowell Green.
Each north London household can take up to six standard rubble sacks of soil to an RRC each month. This includes concrete stones, pebbles, soil, sand and gravel. A standard rubble sack is 51cm by 76cm (20 inches by 30 inches) or equivalent.
If you have a large quantity of hardcore material, consider hiring a skip.