It is a very big issue in terms of potential employment and revenue loss. That is an unsustainable process of taxation, and it will simply drive jobs out of the country. There might be an argument for that if the levy achieved the environmental effects claimed by the Government, but it will not. Friend's point about the disbenefit in environmental terms. Transporting such products will clearly be environmentally damaging to the communities and the environment through which they pass.
Friend is absolutely right.
He recognises the problem in his constituency, which has both aggregate producers and a thriving port. It is obvious that we must find other areas of supply. Does that not strengthen even further the point made by the hon. Gentleman, too, is absolutely right. Indeed, his point is supported by the research that the Government themselves commissioned into the environmental disbenefits of the quarrying industry.