The latest publication of BS:7671 was released on January 1st 2015 and is the third amendment to the current 17th Edition of the IET Wiring Regulations and is now known as BS7671:2008+A3:2015.
Nathan Little from NTL “As professional electrical contractor’s we’ve been aware of the changes to BS:7671 since January this year when the new book was first rolled out. We’ve also held internal training workshops covering all aspects of the 3rd amendment to ensure our installation teams are up to speed on the changes”
From the 1st of July 2015 it is a requirement that all electrical installations are designed and periodically inspected to comply with the updated regulations. Contractors will be expected to hold a copy of BS 7671:2008, incorporating Amendment 3. http://electrical.theiet.org/wiring-regulations/