It's no secret that London is one seriously smog-filled city, but some streets have got it particularly bad. According to sensors run by London Air Quality Network, Farringdon Street in the City is the worst place for toxic pollution in London.
The sensors check levels of tiny toxic particles (or PM2.5, if you want to get technical) at 30 sites across London. The street, which runs from Smithfield to Fleet Street, has higher levels of toxic pollution than Blackwall Tunnel northern approach, Old Street and Marylebone Road.
On the plus side, Sadiq Khan recently announced that he wants to increase the size of London's clean air charging zone to try and tackle pollution. Looks like that can't happen soon enough.