I believe that ALL UK Emiras were registered in Norwich (AO, AP, AR, AS, AT, AU) while the ill-fated factory-direct sales "experiment" ran - until some point in 2024 when they reverted to the dealer sales model and local registrations took place again.... Cars were delivered pre-registered for local dealer collection, home delivery or made available for factory collection under that model.
My car was originally an AU23 plate, factory registered, but was Hendy Southampton's dealer demo car (yes the factory registered those too on behalf of the dealers) from whom I bought it with just 254 miles recorded..... It's back in Norwich now in any case so not an issue (although personal plate on now!) for me....