HC Deb 04 April 1950 vol 473 c1008
59. Mr. Vane

asked the Chancellor of the Exchequer why the current rates for vehicle excise licences for tractors, in excess of seven tons, employed in forestry are much higher than for showmen's tractors of the equivalent weight employed in the amusement trade.

Sir S. Cripps

Showmen's tractors have since 1926 enjoyed low preferential rates because of the extremely limited character and extent of their use on public roads.