HM Revenue and Customs (HMRC) say that you must prove that you are eligible for relief, but you do not need to be registered for VAT.
If your business is eligible for VAT relief, please let us know by calling our team on 0330 390 4510, 9am-5pm, Monday to Friday or contact us via email or webchat, and we will email you a form to complete to reduce your VAT and Climate Charge Levy in the future.
Contact HM Revenue and Customs (HMRC) if you have questions about VAT.