"GDPR Says Yes"

Northern Ireland does not use the UK-wide Tell Us Once system. Instead, deaths are reported via the NI Bereavement Service. After registering a death at a Northern Ireland Registrar’s Office, the family can (or is advised to) notify the Bereavement Service for Northern Ireland (a civil service team). This single service records the death and “informs any benefit office that paid benefit to the deceased” . In other words, it handles state benefit notifications in one step. (It also checks bereavement grant eligibility.) 

Beyond benefits, families still need to separately notify other agencies (Pensions, Passport, etc.) in NI. Thus the NI Bereavement Service is a more limited “tell us once” covering only social security/benefit notifications. In practice, NI registrants simply call or email the Bereavement Service (nidirect.gov.uk provides contact details) to have DWP/Pensions and NI benefit payments updated .  

Differences from GB service: 

The Northern Ireland service is run by nidirect and affects only benefits; it does not automatically alert all the departments covered in GB’s Tell Us Once. For example, NI does not have an integrated channel for notifying Passport or vehicle licensing – those must be contacted separately. (It does remove the need to individually inform DWP Pension, Child Benefit etc. in NI.) In practice, NI families follow an NI checklist (nidirect.gov.uk) rather than a single portal.