The below is some of the information about "What to do after a death" that's found on the Citizens Advice website
https://www.citizensadvice.org.uk/family/death-and-wills/what-to-do-after-a-death/
F.A.Q
What happens when someone dies?
When a person dies in England or Wales, the death has to be registered. This is so even if they are a visitor to the country.
There are only two ways in which the death can be registered.
The first is if a doctor was in attendance during the final illness of the person who died and is able to issue a medical certificate of the cause of the death in a form acceptable to the local Registrar of Deaths.
The second, if the first cannot be achieved, is for the death to be reported to a Coroner.