Being able to shed light on when a car was registered can be a big help when it comes to dating not only old cars and other vehicles, but also photographs that feature older road-registered vehicles.
The current number plate system in Great Britain has been around since September 2001.
There are over 600 pages in this section, the data grouped together by registration number location letters.
The location letters are the one or two letters of the alphabet that appear on older vehicles' numberplates which relate to a particular licensing office.
The '1' indicates that the vehicle was first registered during the period 1 January to 30 June, in the year of registration.
The '2' indicates that the vehicle was first registered during the period 1 July to 31 December, in the year of registration.
The first two letters are an area code, which refer to the DVLA office where the car was originally registered.