Millions of Brits like to say that they have “green fingers”, with around half of the population spending their free time gardening. The garden is their private world. While many Brits like nothing better than spending their weekend cutting the grass, some are happy just to sit under the branches. But in London, there are over 4000 people waiting for some pieces of land. Limited space had led to people looking for new solutions. One recent idea has been to turn rooftops and walls into private gardens which can help improve air quality and make the cities greener. As well as being good for the environment, gardening is also good for the soul. What other free-time activities allow you to be at one with nature?