The multi-million market for three-letter number 1 private plates

A three-letter number 1 plate is a UK private registration format combining three letters with the digit '1' (e.g., MAC 1 or 1 SUE).

Three-letter number 1 plates are among the most sought-after private registrations in the UK.

Brevity combined with the coveted number 1 commands some handsome prices. Whether the letters form a name, set of initials or an acronym, the sequence is undeniably one of the market’s most lucrative formats.

Having handled more than 4,750 three-letter number 1 registrations ourselves, we’ve been able to identify some of the most valuable examples in the market. From exploring their early 20th-century origins to the customers and celebrities (including, in one case, the head of the Roman Catholic Church) they attract. 

The most valuable three-letter number 1 plates in the UK

Based on our records, the top 100 sales of three-letter Number One registrations alone total over £10.5 million. Although DVLA and private auction prices are publicly available, much of the personalised registration market operates away from the auction room, with prices negotiated privately.

As such, we have chosen to keep the explicit prices of our own stock and commission sales confidential, while presenting the plates in order of the prices achieved. DVLA and independent auction prices quoted in this report include fees and taxes.

The table below highlights the top 15 transactions in order of most to least expensive:

The history of three-letter number 1 plates in the UK

The DVLA’s private number plate auctions have helped shape the market for nearly four decades. Their inaugural private registration auction was held at Christie’s in South Kensington in December 1989. Among the registrations offered were:

These were substantial sums at the time, particularly for a market that had yet to develop into the established industry we know today. Their appeal lies in their immediate readability: SUE and GEM as recognisable names and the witty use of the 1 in the phrase ‘one off’.

Are letters-first number plates more valuable?

Among the plate historians, it is generally preferred that the letters precede the numbers.

When vehicle registrations were first introduced, back in the early 20th century, letters-first formats were the first issued by local councils. For some buyers, that historical association adds another layer of desirability. However, it doesn’t always follow that letters-first number plates command the highest prices.

For example, 1 SUE (£39,215), 1 OFF (£32,890) and GEM 1 (£30,360) don't strictly follow that logic. In fact, even the UK's most expensive plate, 1 F, is number first which sold for £926,000 in November 2025.

Our own data, however, leans towards the historic preference, with nearly three-quarters of the top hundred 3-letter number 1 sales featuring letters before the number.

In 2026, nearly four decades after the inaugural DVLA auction, CAT 1 passed through our hands for six figures. It sits alongside three of the highest private sales MAC 1, DOG 1, and BOB 1, all letters-first registrations. So, while the appeal of the format may be historic, the demand proves to still be alive.

Let's take a closer look

An interesting example of the letters-first name plates is our girl, SUE. In February 2019, SUE 1 sold through Brightwells for £161,000. Its counterpart, 1 SUE, fetched £39,215 at the DVLA's inaugural auction in 1989, before changing hands privately in 2002 for over £50,000. Using £50,000 as a benchmark, the 2019 SUE 1 price was a staggering 222% higher.

This difference lends weight to the argument that letters-first registrations can command higher premiums, although the seventeen-year gap between the two private sales must also be considered. Our sales data reveals some other noteworthy examples:

Inflation and the general appreciation of private plates must be considered, especially in the cases of SUE and TOY, where the sales were decades apart. Nevertheless, the much shorter intervals between the RON and DEB sales make these comparisons more compelling in the letter-first debate.

Why name and word private plates command higher prices

One of the strongest themes in our records is the enduring value of names and recognisable words.

Coming in at the most expensive, which has passed through our hands on three separate occasions, is the three-letter number 1 plate MAC 1.

Its value is understandable when considering ‘Mac’ as either a first name, last name or a common set of initials. If you’re anything like us, you might also be surprised to learn that 'MAC 1' refers to a strain of illegal botanicals which some may know as Mary Jane. Regardless, with a substantial population count of nearly 22,000, the power of supply and demand is clearly at play here, with or without the grass.

DOG 1, ranking third, and CAT 1, in eleventh place, demonstrate a slightly different kind of desirability. Unlike the name or initials, which may only be of particular interest to a relatively narrow group of buyers, word plates can attract a much broader audience. In these instances, perhaps a savvy business owner or a rather wealthy pet lover.

The same can be said for eighth place, ACE 1, which achieved £182,900 at Bonhams’ Goodwood Revival auction in September 2026. With the word ‘ace’ already associated with being the best, adding the number 1 is particularly fitting and evidently lucrative.

Names, however, remain one of the strongest themes throughout our records. BOB 1 and RON 1 sit among our highest-ranking sales, followed by registrations such as PAT 1, KAY 1, KEN 1, and MAX 1.

How much are initial and acronym registrations worth?

Out of the top fifteen plates, ten are names or standalone words, while five are established acronyms or initials. These include VIP 1 (twice), LSK 1, CEO 1 and MJB 1.

Besides the obvious appeal of VIP next to the coveted one, LSK 1 is the first initial plate to enter the board at fourth place, selling for £205,520 at a 2021 DVLA auction. It stands as proof that even obscure initial plates can sell more than widely recognisable plates such as CEO 1, which sold for £154,000 in a 2007 eBay bidding war.

This highlights the obscurity of the private registration market: a combination doesn't necessarily need to be recognisable to everybody to be costly. Sometimes, there just needs to be a bidding war between a particularly wealthy Luther Simon Kelly and another Louis Samuel King.

Famous three-letter number 1 plates: From FAB 1 to the Popemobile

The three-letter number 1 format has also found itself attached to some quite famous names.

FAB 1: The Thunderbirds number plate

Perhaps one of the most recognisable examples is FAB 1, famously associated with Lady Penelope's Pink Rolls-Royce in the 1965 television series Thunderbirds.

The registration later came into the ownership of broadcaster Chris Evans, who assigned it to a bespoke pink Rolls-Royce Ghost as part of the FAB1 Million initiative supporting breast cancer awareness.

AMS 1: Lord Alan Sugar's personalised Registration

Another well-known example is AMS 1, associated with businessman and The Apprentice star Lord Alan Sugar. The letters showcase his initials, Alan Michael Sugar, which also formed the basis of his famous Amstrad business name, short for Alan Michael Sugar Trading.

Lord Sugar's AMS 1 number plate has become almost as famous as the man himself, thanks to its appearances on Sugar's Rolls-Royce Phantom in the opening credits of The Apprentice.

AMS 1

VIP 1: The Pope's plate

VIP 1 is undoubtedly one of the most interesting registrations in our records, tethered ceremonially to the famous Popemobile, passing through our hands, and reportedly snatched up by a Russian oligarch.

Its origin can be traced back to Kilkenny, Ireland, where the registration was issued in 1971 to local businessman Bill Finnegan, the founder of the Kilkenny Beer Festival. According to The Irish Times' account from July 2006, Finnegan received the registration in recognition of his contribution to the city. His daughter, Shiela de Loughry, said that the local licensing authorities had wanted to commend his work on behalf of the town.

Finnegan subsequently moved to London during the 1970s, taking his Jaguar XJ6 and VIP 1 with him. Sadly, before registration plate transfers were as civilised as they are today, difficulties transferring VIP 1 between vehicles eventually led him to sell both the car and the registration for just £5,500.

VIP 1 then travelled to the Roman Catholic Church, right into the reign of Pope John Paul II. During his historic visit to Ireland in September 1979, an estimated entourage of 2.5 million witnessed the ceremonial VIP 1 mark his arrival. On his continued tour, the Popemobile shifted from model to model, but the registration VIP 1 stayed faithfully by his side.

A decade after the Pope’s voyage, VIP 1 was sold in a 1989 auction. It passed through our hands before being bought at the 2006 Wilsons Auctions, where the plate reportedly fetched £285,000, increasing by 5,082% from when it sold attached to Finnegan’s old car.

The buyer was allegedly Roman Abramovich, a Russian oligarch, governor of a Siberian province and former Chelsea Football Club owner from 2003 to 2022. However, his spokesperson subsequently denied the purchase, leaving the buyer’s identity unconfirmed.

SCV 1: What is the Pope's official number plate?

Surprisingly, the Pope’s official Vatican City registration is SCV 1, which has followed the successive Popes throughout history. The registration dates back to the beginnings of Vatican City's own vehicle registration system in 1930, just one year after the independent state was established under the Lateran Treaty. The letters stand for Status Civitatis Vaticanae, Latin for Vatican City State.

According to the Vatican's Department of Motor Vehicles, the first SCV registrations were issued to vehicles belonging to the Vatican authorities, including those used by the papal entourage and senior dignitaries.

Although the SCV series belongs to a foreign registration system, it demonstrates that the significance of the three-letter number 1 plates is unbound by geographical borders.

Are three-letter number 1 plates a good asset to invest in?

Our own records demonstrate that these registrations achieve substantial price increases between sales.

For anyone considering private number plates as an investment, comparable sales, rarity, market demand and the costs involved in buying or selling should all form part of the assessment.

While there is no single explanation or quantifiable pattern for the figures certain plates achieved, appreciation is both evident and almost inevitable in this plate format. 

Ultimately, a plate’s value is marked at the point where two subjective perceptions align: what one person is willing to accept and what another is willing to pay. It creates a marketplace that isn’t capped or at all contained by traditional valuation models. 

Although, who can argue with a three-letter number 1? Not even the Pope.