Royal Navy policing is not a direct NCIS equivalent

Does the Royal Navy have organizations comparable to NCIS or the Seabees?

The Royal Navy Police performs some NCIS-like work alongside broader security duties, while commando engineering functions sit elsewhere in Britain’s joint force structure.

Royal Navy Police can handle cyber, narcotics, base-security, and investigative work, combining functions that do not map neatly onto NCIS. Domestic cases are more often passed to local police because British national and local jurisdictions are organized differently from those in the United States. The National Crime Agency, rather than the Metropolitan Police, supplies the closer national serious-organized-crime comparison, while the Met remains the police service for Greater London. Seabee-like commando engineering functions sit elsewhere in Britain’s joint force structure, including Royal Engineer support to the Royal Marines.