To register the death of someone with dementia in England and Wales, you need to attend the local register office within five days of the death. You will need the medical certificate of cause of death, which is issued by the doctor who certified the death. You will also need to provide the deceased person’s full name, date of birth, address, and occupation. The register office will issue death certificates, and you should request several certified copies as these will be needed by the solicitor, banks, pension providers, and other organisations. The Tell Us Once service in England and Wales allows you to notify multiple government departments in a single step. The care home, funeral director, or GP surgery can advise on local procedures if you are uncertain about the process.