Old Street Yard

White Collar Factory sits on the corner of Old Street roundabout, a 237,000 sq ft building Derwent London put up to a design by AHMM, with a running track on the roof. Kitt manages office space inside it. The Studio at ground level runs to ceiling heights of 6.6 metres and is reached by its own lift from the main reception, with a mezzanine bridge across the middle and skylights punched through the concrete. At £100 a desk this is the cheapest City fringe listing. Old Street is seven minutes. Desks start at £100 a month.