A waste firm that illegally dumped 2,000 tonnes of roadwork waste in an Area of Outstanding Natural Beauty has been fined £10,000.
More than 100 truckloads of excavation waste were taken from works on the A41 to Raans Farm in the Green Belt in November and December 2003.
Roadworks contractor Balfour Beatty had complied with its Duty of Care by employing a registered waste firm for the project and requiring it to nominate two licensed landfill sites.
Woodley was fined £1,200 and ordered to pay £716 costs, while Joywheel was also made to pay £716 costs.
The fines followed a joint investigation by the Environment Agency (EA) and Buckinghamshire County Council.
EA Thames Region head of prosecutions Angus Innes told the court that the illegal dumping of construction waste was a huge problem in the south east of England.
"Both defendants were motivated by financial gain," said Innes. "And both knew that what they were doing did not have planning or waste licensing permission."
Investigating EA officer Peter Stark added: "The fines imposed by the court will be a warning that illegal waste operations will not be tolerated."