Controversial plans for a new £300m rail freight terminal in Hertfordshire have been unanimously rejected.
The company is planning to appeal
Helioslough wanted to build the giant terminal near Radlett but St Albans District Council threw out the scheme.
The development company's managing director Simon Hoare said the plans followed government policies to transport goods by rail not road.
The scheme was refused as the depot was to be built on green belt land, was too big and would increase road traffic.
Local residents and councillors also voiced their worries that it would eventually turn into a large road-based distribution park, increasing noise pollution and creating traffic chaos.
Mr Hoare said the terminal was needed to serve the whole of the south east of England and his company proposed to appeal against the decision.
People living near the former aerodrome site have been campaigning against the project which was formally put to the council last November.
Helioslough hoped to build on 300 acres of land near Park Street village.
A spokesman for Helioslough said at the project launch last year that once the scheme was fully operational about 3,000 workers would be employed at the site.
But some residents expressed concerns that the plan would see 2,652 car parking spaces for employees and 617 lorry parking spaces.
Campaigners said it would mean more lorries on the surrounding roads and more than one million vehicle movements each year on roads which were already congested.