Certificate of the fact of death
Although funeral arrangements may proceed the death cannot be registered until the Investigation has concluded. In such cases you will receive a pack of information from the Coroner’s Office which contains, amongst other things, four Coroner’s Certificates of the Fact of Death otherwise known as “Interim Death Certificates” which allow you to deal with your relative’s personal affairs such as closing bank accounts and dealing with other correspondence about the deceased’s estate while the final death certificate is awaited.
https://www.sunderlandcoroner.co.uk/useful-information/when-...

As well as issuing permission for the funeral to go ahead, the coroner can issue a Certificate of the Fact of Death (often referred to as an interim certificate), which can be used to notify asset holders and other organisations of the death and to make an application for probate.
https://www.bereavementadvice.org/topics/death-certificate-a...