"Harrington & Squires, Hampstead Heath. Based in a tiny sliver of a building 1.2 metres wide called The Corridor, Chrissie Charlton & Vicky Fullick run their small design and bespoke letterpress printing business. Here you can buy printed designs, commission a piece or take part in a one day letterpress workshop. Drawers full of an endless variety of type and blocks could keep you busy for days."