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Warning comes as air pollution is expected to reach eight or nine on a 10-point scale in much of southern UK
Planes taxi in fog at Terminal 5 after the weather has led to delays and cancellations at Heathrow airport near London on Monday. Photograph: Steve Parsons/PA
Millions of vulnerable people in southern England and Wales were advised to stay indoors as unusually high levels of air pollution smothered London and other cities, just weeks after heavy pollution led to restricted car use and free public transport in Brussels and Paris.
“That most important advice is for those people who are vulnerable, if you’re in a high-pollution area, to reduce the amount of strenuous exercise outdoors over the next few days,” Dr Paul Cosford, of Public Health England, told the BBC Radio 4 Today programme.
“Carry on life as normal – be aware you may need to use your inhalers more frequently – but carry on your life as normal. We do have problems with air pollution in our cities. The main sources we have are vehicle transport and the industrial process, when you put that alongside the unusual weather consequences like the Saharan dust … then that’s when you get these few days of unusually high pollution.”