'Most polluted' street outside London
Media playback is unsupported on your device

Caerphilly street is 'most polluted' in UK outside London

Air pollution is a "public health crisis" and needs to be tackled urgently, a health agency has warned.

Public Health Wales (PHW) said it was second only to smoking and more of a concern than obesity and alcohol.

Its figures show air pollution causes 2,000 deaths a year - 6% of Wales' total.

The most blighted areas include Hafodyrynys Road in Crumlin, Caerphilly, the UK's most polluted street outside London.

  • 07 Mar 2017
Go to next video: 'Harder to breathe' on polluted road