Common dual-market strategies:
- CE marking only: Simplest route. A CE mark is valid for NI, and the government confirmed on 21 October 2026 that it will keep accepting CE marked devices in GB on a long-term basis.
- CE + UKCA dual marking: Widest coverage. CE from EU Notified Body for NI, UKCA from UK Approved Body for the GB domestic route. Two conformity assessments required.
- CE + UKNI from UK notified body: A UK notified body issues CE + UKNI marking for NI market. Combine with separate UKCA for GB. Note: UKNI not valid in EU.