15/10/2026
Out with the Old (brown), in with the New (Orange)
Amendment 4 to the IET Wiring Regulations (18th Edition), officially titled BS 7671:2018+A4:2026, became the definitive British Standard for electrical installations on 15 October 2026.
This latest update keeps your business compliant and ready for modern electrical installations.
Your business must now implement Amendment 4 for all new electrical installations, modifications to existing installations, and periodic inspections and testing.
It is also an NICEIC scheme requirement that you demonstrate access to Amendment 4 during assessment to continue to comply.
The previous version, BS 7671:2018+A2:2022+A3:2024 and the Corrigendum 2023, has now been withdrawn, with Amendment 4 now the only version of the British Standard for electrical installations, and primary reference for compliance in the UK.
It’s not just about safety; it’s about competency and being up to date with current requirements.