VAT Exception application

I had been informed by my accountant that that I needed to apply for a VAT exception as I temporarily crossed the VAT threshold (had a hobby income from ebay which is not being continued) My accountant was trusted to deal with this but hasn't, so I am applying for exception myself, can this only be done by post or can I do this via email using the email address for new registrations? Many thanks in advance

https://www.gov.uk/government/organisations/hm-revenue-customs/contact/vat-registration-applications-exceptions-and-changes "Write to HMRC if you have temporarily gone over the registration threshold and want to ask for an exception so you do not have to register for VAT. Address is BT VAT, HM Revenue and Customs, BX9 1WR, This is not as simple as it sounds, you need to include an explanation as to why you went over and why you will be below thereafter. HMRC will likely write back and ask you to disclosure your previous 12 months turnover and your projected 12 months turnover before HMRC are able to make a decision as to whether to grant exception or not.

Hi Michael Peters,
Please send this request for Registration Exception in by post.
The address is as below:
Registration Unit
BT VAT 
HMRC 
BX9 1WR
Please see the guidance below:
3. Working out whether you need to register
Thank you. 

Hi. I had send a courier to this address and it got returned. Please advise what to do?

Hi guhan.meta1 k,
If you are applying for an Exception To Registration then please complete a VAT 1 by post to the address provided.Apologies if this has been returned to you.
Please see below:
Register for VAT by post.
Thank you.