Millions in London issued with ‘toxic air’ alert due to thick fog and fireworks

Londoners have been urged to take care after a high air pollution alert was issued (Picture: Reuters)

London has been issued with a ‘toxic’ air pollution alert as a result of thick fog and fireworks.

Mayor of London Sadiq Khan triggered the warning after forecasters predicted high levels of particle pollution, which can affect people’s health.

Dense fog and very light winds over the weekend allowed pollution to build up ...