When the Coroner is given a cause of death by the doctor, the doctor and the Coroner will notify the Registrar of the death. This will happen normally within 24 hours.
You may then register the death. You must do this in person.
If the Coroner has decided to hold an inquest or is awaiting further results from tissue analysis etc. then a full death certificate will not be available until after the inquest/investigation is concluded.
However to enable the family to deal with banks, insurance companies, pension provider, National Savings, or any other body which needs official confirmation of the death, the Coroner will, on request, issue an Interim Certificate as to the Fact Of Death, more commonly known as an Interim Death Certificate.
The interim certificate is not a death certificate. Copies of this are supplied to the next of kin once the inquest/investigation has been opened.