Stock Photo - WC2N — Charing Cross is one of the polluted postcodes identified in London in the 12 months to September 2017. This area includes traffic around Trafalgar Square, the National Gallery, Charing Cross station, Embankment Pier and some parts of the West End theatre district. Marylebone Road and Hyde Park Corner, both in central London, have the most polluted postcodes in Britain, says a new study on air quality. The data comes from a project to map concentrations of nitrogen dioxide (NO2) across the country Featuring: Atmosphere Where: London, United Kingdom When: 11 Jan 2018 Credit: WENN.com