The latest update to the wiring regs (18th Edition) was released on 15 April 2026. If you’re currently training or recently qualified, here’s everything you need to know.
What’s included in the latest update?
The Institution of Engineering and Technology (IET), in partnership with the British Standards Institution (BSI), officially published Amendment 4 (2026) to BS 7671:2018, marking the latest update to the UK’s wiring regulations.
According to the official press release, the amendment introduces a series of technical updates aimed at improving safety, accommodating emerging technologies, and refining existing requirements (IET, 2026).
The update is already being implemented within training environments. At Able Skills, the 18th Edition qualification (2382-26) is already being delivered using the new (orange) book, with further updates to course materials being introduced over the coming weeks.
What does this mean if you already hold the 18th Edition?
If you already hold the 18th Edition, there’s no need to retake the qualification. There’s also no ‘conversion’ exam, like we saw during the 17th Edition.
What’s the impact of Amendment 4?
From an industry perspective, the impact of Amendment 4 is expected to be gradual rather than disruptive. Steve, one of our electrical instructors here at Able Skills, observed that “The updates are mainly technical in nature, with some formatting changes. They will have little effect on the daily lives of working electricians but are of more concern to designers and those commissioning installations.”
He highlighted the introduction of a new chapter on battery installations, “Most significant is probably the introduction of a new chapter to cover battery installations when used as alternatives to the mains supply, such as batteries as a complement to solar photovoltaic installations. This is a specialist area of knowledge and requires a deeper understanding of the technical and safety aspects of such systems.”
As with previous amendments, the cumulative effect is expected to shape future editions. “Over the life of an edition, they can add up to represent significant changes,” Steve explained, with expectations that the 19th Edition could take effect around 2029.
For most electricians, the changes won’t affect day-to-day work, but it’s important to stay aware of updates, especially if you’re moving into design or inspection roles.
Electrician Training