Growing underground: the fresh herbs sprouting beneath Londoners' feet

Daily crops grown in former air raid shelters under Clapham supply markets and a home delivery service and herald a novel approach to urban farming

The UK's first underground farm is protected from the vagaries of the weather but not, it turned out, from another perennial problem for farmers: trespassers.

The appearance of spray-painted squares on the floor of the former air raid shelters under Clapham in London mystified Steven Dring, co-founder of Growing Underground: "Then someone said to me 'that's where the speakers were going to go for a rave'."