Amendment 4:2026 to BS 7671:2018 IET Wiring Regulations
The latest update to BS 7671 keeps you compliant and ready for modern electrical installations.
Stay current with evolving technologies and UK standards.
Electrical installations are evolving, and BS 7671 sets the standard.
As the UK’s national standard for electrical installations, BS 7671 has requirements for all low voltage electrical installations and helps professionals stay ahead of the curve with guidance on emerging technologies, modern practices and compliance requirements.
Whether you're working with solar photovoltaic (PV) installations, battery storage, Power over Ethernet or on medical locations, BS 7671 has the requirements for today’s electrical installation work. It’s not just about safety; it’s about competency and being up to date with current requirements.
The IET co-publishes BS 7671 with the British Standards Institution (BSI) and leads the UK’s national Wiring Regulations committee, JPEL/64, ensuring the standard reflects both international developments and UK-specific needs.
Explore updates, technical support, model forms, training and digital access, everything you need to stay sharp and work to the latest standard.
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IET Wiring Regulations BS7671 Amendment 4: What's changed?
Transitioning from old to new regulations
Jordan Farley of Artisan Electrics and Mark Coles, from the IET, discuss the IET Wiring Regulations Amendment 4 and the transition period electricians and installers have to get up-to-date.
The video includes questions such as how long the transition period is between the old and new regulations and how to pre-order your copy of Amendment 4.
Watch it on YouTube, like the video, and subscribe for more BS 7671 guidance.
Pre-order Amendment 4:2026 to BS 7671:2018 IET Wiring Regulations (the Orange Book)
The Brown Book
Amendment 3:2024 to BS 7671:2018 IET Wiring Regulations (the Brown Book) is still in use and will be until 15 October 2026.