What happens if HM Revenue and Customs (HMRC) doesn't receive the VAT 68 from the new owner?
If HMRC doesn't receive the VAT 68 from the new owner, you will be deregistered for VAT.
If the VAT 68 is not received because you have kept the business then you will need to remain registered for VAT, in which case you will need to write to HMRC explaining this.