BS 7671 Amendment 4, the latest update to the IET Wiring Regulations, was published on 15 April 2026 and became the only current version on 15 October 2026, when the previous version was withdrawn. If you hold a valid Electrical Installation Condition Report (EICR), the amendment does not make it invalid. Your next inspection is still due on the date your report gives. The change you are most likely to notice is on the report itself: an FI (further investigation) code no long