An Englishman's home may well be his castle, but without a front garden it could get surrounded by far more than just a moat. In a new report, Members of the London Assembly Environment Committee have urged the government to change planning laws to control the number of front gardens being concreted over, saying this is putting pressure on sewerage systems and increasing the risk of flooding. Gardens play an important role in the capital's ability to soak up rainfall, yet the report reveals that London has lost two-thirds of its front gardens, equal to an area 22 times the size of Hyde Park, or the size of 5,200 football pitches. In recent years, flash floods have meant tonnes of raw sewage have been dumped into the Thames killing wildlife and leading in turn to more localised flooding.

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