WITH VIDEO Pictured: Commuters around London this week opt for individual clean air supply (metal dive helmets) as new data from Nuaire reveals air pollution is set to be worse than pre-Covid in several major cities - despite the UK still partly in lockdown for a further four weeks. A quarter of Londoners will pull a ?sickie' so they don't have to travel to work as air pollution peaks this summer, according to new research. The study, which also analysed air quality in several major cities, showed that nitrogen dioxide are already back at pre-lockdown levels in Sheffield, several London boroughs and Brighton, Plymouth and Bristol. It is feared air quality will also deteriorate to potentially dangerous levels in central city locations in London and Manchester Picadilly with the Prime Minister hoping to lift remaining restrictions on July 19. Air quality and ventilation specialists Nuaire quizzed 2,000 adults nationwide and found an overwhelming 83 per cent said they'd noticed air quality improve over the last year. To highlight the issue commuters donned diving helmets as they made their way to offices in London this week. SEE OUR COPY SNAir FOR DETAILS. ? Solent News & Photo Agency UK +44 (0) 2380 458800