The rooves at All Saints' are difficult to access, and safety harnesses and ropes are vital if work east of the Central Tower is to be done safely. Although this is a huge expense, the long-term costs of neglect are greater.
Here Alex from Wall Walkers Ltd is lowering some of the debris to ground level. The debris comprises pigeon droppings (25 per day per bird, on average), nesting material, moss washed from the slates, stone dust crumbling from the walls, and litter blown up from the street - and it soon builds up!