In 2006 there were 307,407 vehicles in the tax exempt category out of a UK car population of over 31 million.........
Gordon Brown froze classic car tax exemption at 1972 in his first 1997 budget as New Labour Chancellor under Tony Blair.
Under the previous Tory government Ken Clarke as Chancellor had introduced it as a rolling 25 year tax exemption in 1995.
The Chancellor abolished road tax on old cars (Press Report from 1995)
http://www.independent.co.uk/money/the- ... 23718.html
The number of vehicles licensed in the historic tax class as at 31 December 2006 was 307,407
http://www.theyworkforyou.com/wrans/?id ... g138816.q0
There were 31,035,791 cars on British roads at the end of 2009
http://www.telegraph.co.uk/motoring/new ... d-War.html