Ways and Means

I wish to make a point about tax avoidance and fraud. When it comes to landfill tax, will that extend to companies or public organisations which know that the price they are paying for the collection of their waste cannot possibly include the disposal rates of landfill tax? Or will it cover those accountants and others who are involved in a landfill tax company and know what is actually going on? Will that be covered by the definition of fraud and avoidance?