MORE than 23 million tonnes of construction waste has been dumped at unlicensed sites to avoid the landfill tax.
The shock figure is contained in a plea to Customs and Excise from the Quarry Products Association to rethink the tax during its current review of the regulations.
Fly tipping is causing severe shortages of materials used for landfill and recycling.
Experts with the association believe the loss of materials to fly tippers is costing the government £50 million in potential tax revenue.
Nigel Jackson, managing director of association member Greenham Construction Materials, said: 'It is essential that the structure of the tax is changed to drive back non-recyclable materials such as soils and clays to licensed landfills and recyclable materials such as brick and concrete to recycling sites.'