Source – HMRC

From 5‌‌‌‌‌‌ August‌‌‌‌‌‌ 2024, any request to change your VAT registration details should be made using the VAT online account, and not by using the VAT484 form or any other postal or electronic means. 

Using the digital route is quicker, more secure and will avoid any unnecessary delays.

For customers that are unable to access and use our digital services such as those who are digitally excluded or need assistance with digital services, HMRC will always provide a service to meet their needs, continuing to offer support through non-digital channels such as the phone, which includes our ‘needs extra support’ service.

We know some customers will still need to apply for a change to their details via post on a VAT484 form if they are digitally excluded or, for example, notifying us of taking over someone else’s VAT responsibilities. These customers can contact HMRC to ask for a form.  

Updated guidance will be available at ‘Change your VAT registration details‘ 
from August‌‌‌‌‌‌ 2024.