HM21O number plates
Find vehicles by number plate or search and buy personalised registrations.
The ‘HM’ prefix/memory tag on current style UK number plates is a reference to the Hampshire & Dorset, Portsmouth DVLA local office which issued the registration, and is within the local area to where the vehicle was first registered (may not be accurate if a private registration is in use).
While the DVLA still uses this memory tag as a distinguishing marker, it's worth noting that by July 2012, all DVLA local offices (with the exception of DVLA Swansea) across England, Wales, and Scotland were closed and moved online.
DVLA Portsmouth
5th Floor
The Connect Centre
Kingston Crescent
PO2 8AH
This DVLA local office is now permanently closed. The address is maintained solely as a historical reference.
FAQ’s
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What year are HM21 O number plates and can I buy one?
21 series number plates were introduced ahead of new vehicle registrations running from 1st March 2021 to 31st August 2021. We have a wide selection of 21 series – ‘HM21 O’ personalised number plates currently available for sale.
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Can I choose my number plate when buying a new car?
When you buy a new vehicle, it will usually come with a standard year identifying registration assigned by the DVLA. This registration not only provides a unique identity to your vehicle but also indicates the local DVLA office where the number plate was issued, as reflected by the first two letters of the registration. For example, a current style registration starting with "HM" indicates the vehicle was registered in the Hampshire & Dorset, Portsmouth area.
If you want a specific or personalised number plate, you can buy a private registration. Once purchased, you'll need to assign it to your vehicle through the DVLA, ensuring all the necessary paperwork and criteria are met.
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Can I assign a 21 reg to my car?
21 series number plates, when introduced in 2021, were designated for new vehicles registered between 1st March 2021 and 31st August 2021. If you wish to use a 21 reg on a vehicle, it's essential to ensure the vehicle was first registered on or after the 21 series introduction date. In the UK, you cannot use a registration mark that makes a vehicle appear newer than it is.
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Can I transfer my current number plate to a new car?
Yes, you can transfer your current number plate to a new car as long as both vehicles meet the DVLA's criteria for transfer. The process involves retaining your existing number plate, applying to the DVLA and ensuring both vehicles are currently taxed or declared SORN (with some exceptions) and have a current MOT. Check car tax and MOT history.
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How long does it take to assign a private number plate to my vehicle?
Once you have all the necessary documents and have made the application, the DVLA typically takes around 10-15 working days to process and approve the assignment of a private number plate. However, this can vary depending on the workload of the DVLA at any given time.
For a quicker and more convenient process, the DVLA offers an online transfer service available from 7am to 7pm daily. This online service allows for an instant transfer of private number plates, making it an attractive option for those who prefer a more immediate confirmation.
Hint: Toggle filters to only show HM21O registrations assigned to a vehicle, or to view HM21O number plates for sale.