Boris Johnson has branded Greater Manchester's original Clean Air Zone (CAZ) proposal a "thoughtless" plan that would have "damaged business".
The scheme, which was originally set to be launched in May, would have been one of the largest of its kind in the country - covering an area of around 493 miles.
The CAZ would have seen a £60 charge for HGVs, buses and coaches, £10 for vans and £7.50 for taxis and private hire cars.
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