My favourite key cutter in Kentish Town has a display of locks in his window and an ‘Everything Must Go!’ sign. He’s an old school Hong Kong merchant who advertises keys for £1. All his signs are handwritten, many in thick red marker, many of them warnings. Last year he got a dog, a pug. It’s quite fat and makes a lot of noise but you can tell it’s a softy. When I asked the key cutter if his dog would really attack anyone, he lowered his voice in a confidential manner, ‘His teeth are too small to do any damage’.