The latest statistical series on the number of licensed cars and cars registered for the first time were published in Tables. 1b and 12b of Vehicle Licensing Statistics 2005. A copy of this report, published on 18 May 2006, was placed in the House of Commons Library and it is also available at:
http://www.dft.gov.Uk/pqr/statistics/datatablespublications/vehicles/licensing/coll_vehiclelicensingstatistics2/vehiclelicensingstatistics2005