Wandsworth council recorded 17.0 fly-tipping incidents per 1,000 people a year from 2022-23 to 2024-25, 1.5 times the typical English council's 11.0. In 2024-25 it recorded 5,580, most of them on the highway. It issued 1,828 fixed penalty notices, 1,322 of them littering fixed penalty notices issued in conjunction with fly-tipping, and brought no prosecutions.
Clapham Junction isn't in Clapham, and the mattress dumped by it isn't anybody's, apparently.