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Amendment 4 to BS 7671 is the next major update to the IET Wiring Regulations. This page provides a continually updated overview including expected changes, timeline, draft developments, guidance, and links to in-depth resources.
What Is Amendment 4?
Amendment 4 is the forthcoming update to BS 7671:2018 (18th Edition) Wiring Regulations, expected to introduce significant technical and safety changes across areas such as consumer protection, prosumer installations, fire safety, and energy efficiency.
Key Topics Covered in Amendment 4
Find out more about the major changes that are expected in BS7671 Amendment 4, Click here
Frequently Asked Questions
Still have questions about Amendment 4? Our in-depth FAQ page covers everything from timeline specifics and training requirements to how these changes impact your day-to-day electrical installations. Click Here
What Happens Next
The IET and BSI are currently reviewing feedback from the public consultation process. Once finalised, Amendment 4 will be published in 2026, at which point electrical professionals will need to update their working practices and documentation to reflect the new requirements.
Pre-orders for Amendment 4 publications and associated training courses will become available ahead of the official release date.