Pollution is measured by the Environment Department on a scale of 1 - 10, with 10 being the highest levels of pollution:
- North Kensington (10/10)
- Haringey (10/10)
- Bloomsbury (9/10)
- Marylebone Road (9/10)
- Camden (8/10)
- Harlington (8/10)
- Teddington Bushy Park (8/10)
- A2 Old Kent Road, Southwark (7/10)
- Bexley (7/10)
- Thurrock (4/10)
You can see the latest map detailing London's pollution hotspots by clicking here.
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"All it takes is for somebody to see me - and I could just die, just like that. I could want to go to the shop and not come home."
Before the killing, Peters searched the internet for "serial killers", "treatment of child killers in prison" and "premeditated murder".
Arriva Rail North, Greater Anglia and South Western Railway are all affected.