Adrienne Attorp thought she’d be spending most of her days looking after patients in hospital or a doctor’s office. Instead, she’s more likely to be found spending her time on an empty car park about 8.5 miles from central London.

As the general manager of Cultivate London, an urban farm that produces plants and lettuce leaves in one of the world’s largest cities. Attorp oversees a growing business of nine employees — up from three in 2010 — and there’s likely more expansion on the way.