A unique number assigned by the Driver and Vehicle Licensing Agency to identify a Driving Licence Holder, an applicant who has been refused a licence for medical reasons, or who has come to notice through court proceedings e.g. Driving under age.

References:
The e-GIF version approved for use in NHS England is:
Government Data Standards Catalogue: (GDSC), Version 2.1, Agreed 24 May 2002.
Further information can be found on the Cabinet Office website.

This attribute is also known by these names:

Context	Alias
plural	DRIVER NUMBERS