Tories pledge to reverse Ulez expansion and limit 20mph roads in Wales

Plan would reverse the most recent expansion of the Ulez in London, which widened to the perimeter of the capital. Photograph: Yui Mok/PA

The Conservatives have promised to introduce a law that would unilaterally reverse the expansion of London’s clean air zone and limit the use of 20mph routes in Wales, overturning the choices of voters in both places.

In a pledge that, if implemented, would mark a significant reversal of devolution, the Tories said they would immediately introduce a backing drivers bill, which would use Westminster powers to quash local say over parts of transport policy.