London mayor issues emergency air quality alert amid heatwave

Rising temperatures and southerly winds expected to bring toxic air to large parts of England and Wales on WednesdayThe mayor of London, Sadiq Khan, has triggered the capital's emergency air quality alert as soaring temperatures combined with southerly winds are expected to bring dangerously toxic air to large parts of England and Wales on Wednesday.The emergency alerts will see warnings displayed at bus stops, on road signs and on the underground. Continue reading...