Well well well. It seems that diesels are not as clean as originally hoped and the government are considering an additional £10 levy on them in central London in addition to the congestion charge.
Personally I am not surprised at all and another incentive is the tax revenue of course.
http://m.bbc.co.uk/news/uk-england-london-28540259
Personally I am not surprised at all and another incentive is the tax revenue of course.
http://m.bbc.co.uk/news/uk-england-london-28540259



