A man with short grey hair and a white beard is breaking walls at the top of the flats. He wears shorts and work boots with yellow socks, an orange vest open at the front and nothing on his head. His skin is brown from the sun. The scaffolding makes it hard to reach the wall so he clambers and twists and contorts, reaches and stretches, loosening the bricks with a short-handled sledge and tossing them down in ones and twos.