Here is what the law says in that regard
(quote)
Power to refer to Director of Public Prosecutions
The Coroner cannot find someone guilty of a crime. If, at any time during the course of an inquest or inquiry, the Coroner forms an opinion that a known person has committed an indictable offence in connection with the death the Coroner is required to suspend the inquest or inquiry and refer the matter to the Director of Public Prosecutions.
It is entirely a matter for the Director of Public Prosecutions to determine whether charges should be laid against the person, and a matter for the criminal courts to determine whether the person is guilty.
Similary, the Coroner cannot determine civil liability, although the Coroner’s finding may be relied upon in subsequent civil proceedings and/or insurance claims.
The Coroner's role