It seemed as though there had been a party by the Ravensbourne in Deptford - there were KFC wrappers and cheap lager cans at one point. It was about the only litter though - much of the rest of the walk through Brookmill Park was removing the invasive Himalayan balsam and keeping the path open with secateurs. Adi will have had a lot more litter in Sydenham’s Mayow Park.