High pollution levels in London are expected to fall. The capital has been blighted by increased levels this week with London Ambulance Service reporting a 14 per cent increase in emergency calls for people experiencing breathing problems.
Defra have issued health advice for at-risk individuals as 'very high' pollution levels hit London.
London Ambulance Service revealed earlier that there had been a 14 per cent rise in the number of people calling 999 for help with breathing difficulties.
Boris Johnson was accused of "dangerous complacency" after urging Londoners to "keep a sense of proportion" over the pollution scare.
Pollution levels in London are 'high' today according to the Government and the Met Office but what is causing the increase?