Screwfix has announced that it will be stocking the IET Wiring Regulations BS 7671:2018+A4:2026 Requirements for Electrical Installations for the first time ever.
The retailer will be stocking three important IET books: The IET Wiring Regulations (BS 7671), the Guidance Note 3, and the On-Site Guide.
Electricians will be able pick up the books from stores, on the Screwfix app, and online from 15 April 2026, with the previous version of the book (Amendment 3) to be withdrawn six months later.
Key updates to the 18th Edition (Amendment 4) include new guidance on stationary secondary batteries for electrical storage, Power over Ethernet (PoE), requirements for high rise residential buildings, cables for protected escape routes, requirements for the connecting of sources of supply, which includes battery storage and significant revisions to requirements for medical locations, including updated testing procedures. IET jointly publishes BS 7671 with the British Standards Institution (BSI).
Sam Thomas, Screwfix Electrical Category Manager, says, “We’re delighted to be able to offer electricians the IET Wiring Regulations for the first time. We know this is a must-have for electricians, and we’re making it really convenient for them to purchase the books from all of our stores or through the app, and on Screwfix.com, from the 15 April.”
Mark Coles, Head of Technical Regulations at IET, adds, “Amendment 4 brings the IET Wiring Regulations in line with the realities of modern electrical installation to provide requirements for the increasing complexity of today’s domestic installations.
“We’re pleased to partner with a nationwide retailer that shares our commitment to supporting professional installers. Their extensive store network makes it easier than ever to access our products and their increasing focus on serving the electrical trade demonstrates a real understanding of what installers need.”
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