How updates are published
Editorial corrections, consisting of minor changes to publications, will be made quarterly.
Urgent technical changes that need to be made will be published as and when required.
Use our handy timeline to check that you're up-to-date and using the latest version of the IET Wiring Regulations - BS 7671:2018+A2:2022.
Copyright of updates
No further electronic copying is permitted without written permission; however, you are permitted to create a web link to this page, from which other people can then select and download documents. You are not permitted to create a direct link to a document.
Amendment 3:2024 to BS 7671:2018 IET Wiring Regulations (the brown book)
Amendment 3:2024, the free-to-download PDF ‘bolt-on’ to the brown book published is now available for free below.
You will now need both the brown book and the free PDF to be up-to-date.
The Brown book, Amendment 2:2022 and the PDF ‘bolt-on’ will be valid until at least 2026.
Have you got your brown book yet?
Use our handy timeline to check that you’re up to date and using the latest version.
Watch the DPC announcement
An update from Mark Coles
Amendment 4 (2026) to BS 7671:2018 IET Wiring Regulations
The Draft for Public Consultation (DPC) for Amendment 4 (2026) has now closed.
The amendment, known as Amendment 4, has been long-scheduled and will incorporate changes to harmonised standards at European level which the UK has to adopt within a certain time period.
It is intended that this Amendment will include requirements for stationary secondary batteries, low voltage generating sets, power over ethernet (POE), energy efficiency and functional earthing and functional-equipotential-bonding for information and communication technology equipment and systems (ICT). Each area of change is a response to fast-evolving technologies.
Amendment 4 is expected to be published in 2026, until that time electrical installers need to have a copy of Amendment 2 (2022) - the ‘brown book’ and Amendment 3 (2024) (free PDF bolt-on) to be up to date.
Corrigendum (May 2023) to BS 7671:2018+A2:2022
IET and BSI announce the Corrigendum (May 2023) to BS 7671:2018+A2:2022:
IET and BSI publish Corrigendum to BS 7671:2018 (IET Wiring Regulations).
The Corrigendum (May 2023) to BS 7671:2018+A2:2022 is available to download below.