Tulse Hill

The area has a large concentration of radon, with Brockwell Park falling right in the middle of it.

Tooting

Most of Tooting is radioactive, including the ground under St George's Hospital and Tooting Primary School. This also stretches to Streatham Cemetery.

Peckham

Peckham is also one of the worst affected areas, with Aylesham Shopping Centre and Peckham Bus Station in the perimeter.

Rotherhithe

Southwark Park, Surrey Quays Shopping Centre and Alfred Salter Primary School all sit on land with higher levels of radon.

Greenwich

The whole area, including the idyllic Greenwich Park, is affected.

Lewisham

This South London area is also affected, right along to Kidbrooke.

Eltham

Parts of Eltham, near Royal Blackheath Golf Course, also have high levels of radioactivity.

Charlton and Woolwich

The belt of radioactivity stretches from Greenwich to Charlton and through to Woolwich.