Private number plates: what makes one a good buy

Private number plates range from a few hundred pounds to six figures, and the difference usually comes down to a handful of simple rules. Here is how the trade actually judges a plate, so you can spot a good buy rather than overpay.

The number 1 rule. The digit 1 is the most sought-after character on any plate. It is physically narrower than every other character, so it takes up less space and reads more cleanly, and it also reads as "the first". That is why a plate like AB11 ACB tends to be worth more than AB27 ACB: the double 1 makes the plate read almost like AB1 and 1ACB at the same time. As a rule, the lower the number, the better, and 1 is the prize.

Fewer characters, older format. Value broadly follows age and brevity. Dateless plates from before 1963 sit at the top, followed by suffix (ABC 123D), then prefix (A123 BCD), then the current style (AB12 CDE). Shorter marks with fewer characters, especially those that hide a vehicle's age, carry a premium.

Make it read as a name or a word. The plates people pay most for are the ones that say something. Numbers can stand in for letters, so an 8 reads as a B, a 0 as an O, a 5 as an S, a 3 as an E and a 1 as an I. That is how BO08 reads as BOOB and a plate like DAV1D reads as David. A mark that spells a name, a word or a set of initials will always be easier to sell on.

Your initials, ideally twice. For personal plates, the strongest choice carries your initials clearly, and the very best carry them twice. On a current-style plate, that means the two-letter area block and the three-letter group both point to you, as in SJ11 STJ for a Steven Terence Jackson. If the exact combination is not available, a plate showing your first and last initial, such as SJ, is the usual fallback because middle names are often dropped in everyday use.

Mirror plates and shared initials. Some clever plates work in more than one way. A plate ending in S, O or G can be paired with a number that mirrors it, and couples often choose a plate where the area block and the final letters share a surname initial, so two people in the same household can both relate to it.

Let the data guide the price. Beyond the rules, price follows rarity and live demand. Our figures, drawn from official DVLA new-reg data and newreg.co.uk, show which initials, combinations and numbers buyers are actually chasing, which is the best guide to what a plate is really worth today.

If you want to search for a plate using any of these ideas, you can do so at newreg.co.uk.

About this guide. This is general guidance based on official DVLA registration formats and New Reg's long experience in the number-plate market. It is not financial advice, and a plate's value can go up or down. All plates must be displayed in the correct legal format; you cannot rearrange or misrepresent the characters on the physical plate.