London on pollution 'high alert' due to cold air, traffic, and wood burning

Camden, City of London, and Westminster hit 10 out of 10 on index, while pollution levels across UK also peaked

London has been put on "very high" alert as cold and still weather, traffic, and a peak in the use of wood-burning stoves combined to send air pollution soaring in the capital and across swaths of the UK.

According to data from King's College London, areas of London including Camden, the City of London and Westminster all reached 10 out of 10 on the air pollution index, with many other areas rated seven or higher.