Current Style Number Plates Explained

The current format arrived on 1 September 2001, designed around three goals: more combinations, a clearer age code, and a layout that witnesses could recall more easily. Research had shown people remember the start of a plate best, so the two-letter memory tag comes first and encodes the region and DVLA office where the vehicle was first registered.

The age identifier follows. From March to August it is simply the last two digits of the year (02, 15, 24). From September to February it is that number plus 50 (52, 65, 74), which is why a car registered in autumn 2023 carries “73”. The three closing letters are random and are the part a private plate buyer personalises.

The system has enough capacity to run until 2050, and because the age code is numeric it is the easiest format to read. It is also the only format where the plate can never go on a vehicle older than the code — which is exactly what makes a well-chosen current-style plate a subtle upgrade rather than a shout.

The age identifier never uses 01 to 50 as a September code and never 51 to 99 as a March code — so “AB01” does not exist and 51 was the very first. In the random three letters, I and Q are excluded to avoid confusion with 1 and 0; Z is allowed. As a memory-tag first letter, I and Z remain reserved for Northern Ireland, Q for vehicles of indeterminate age, and J, T, U and X are unallocated.

Read the two digits, convert them to a date with the table above, and the plate can be assigned to any vehicle first registered in that six-month period or later. A “19” plate suits any car from March 2019 onward. Buyers often choose a current-style plate that matches or slightly pre-dates their car, keeping the age impression accurate while hiding the exact month.

Check any plate's earliest eligible vehicle