If you run a pub, bar, restaurant, live music room, or event space near Kentish Town Road, you already know how quickly one spill can turn into a problem. Red wine on a pale carpet. Coffee on an upholstered banquette.

If you run a small business in Kentish Town, you probably know the feeling: the office looks fine on Monday morning, then by Thursday the bins are full, the kitchen is a bit sticky, and the dust on desks starts to catch the light.