Since its formation on 29 May 2002, the Department has had responsibility for the Civil Aviation Authority which is responsible for the regulation of civil aviation in the United Kingdom. The CAA is financially independent of Government and is financed by those it regulates. The financial statements for the CAA are published in its annual accounts.
The Vehicle and Operator Services Agency (VOSA) was formed on 1 April 2003 following the merger of the Vehicle Inspectorate and the Traffic Area Network division of the Department for Transport. VOSA provides a range of licensing, testing and enforcement services with the aim of improving the roadworthiness standards of vehicles ensuring the compliance of operators and drivers with road traffic legislation, and supporting the independent Traffic Commissioners. The financial statements for the Vehicle Inspectorate were published in its annual accounts.