Columbia subject headings:
Railroads--Great Britain--Freight.
Transportation and state--Great Britain.
Transportation, Automotive--Great Britain--Freight.
Harvard subject headings:
Railroads--Freight--Great Britain.
Transportation and state--Great Britain.
Trucking--Great Britain.
Princeton subject headings:
Railroads--Freight--Great Britain.
Transportation and state--Great Britain.
Trucking--Great Britain.