Thank you for the feedback. A few points for clarity, both for you and anyone else reading this.
On centring: the spacing top to bottom is not equal by design, not by error. UK law requires every plate to display the manufacturer's BS AU 145e marking along with our company name and postcode, and this has to sit within the plate border. That takes up space at the bottom, which is why the registration isn't centred top to bottom. Left to right, it is centred as standard. This applies to every DVLA compliant plate from any supplier, not just ours.
In your original email, you also mentioned you'd had to return plates to a few other suppliers for the same reason before placing this order. Since the spacing you're describing is a legal requirement rather than a supplier choice, it's likely those suppliers were also correctly following BS AU 145e rules rather than making an error.
On the air bubbles: we take quality control seriously and would like to inspect the plate. Please contact us directly so we can look into it and put it right if there is a genuine fault.
On contact: the only email we have on file from you is the one sent before your order, asking us to centre the registration, which we did within the legal constraints above. We have no record of any email, call, or message from you since the plate was dispatched. If you did try to reach us and it didn't arrive, please resend to hello@nextdayplates.co.uk and we will respond.
Next Day Plates is a DVLA registered supplier. Every plate meets BS AU 145e standards, which is what governs the spacing you're describing. We're glad to resolve any genuine fault directly, we just need you to get in touch.