Air pollution: Rise in 999 calls for breathing problems

A rise in emergency calls over health problems has been reported as high levels of air pollution continue to affect parts of the UK.

London Ambulance Service reported a 14% rise on Wednesday in 999 calls related to breathing difficulties.

Data from Defra shows London and south-east England experiencing pollution on Thursday at the maximum level of 10 - meaning "very high".

BBC science editor David Shukman reports.

BBC News