BS7671 Amendment 3
BS7671 – The Third amendment to BS 7671:2008, The IET Wiring Regulations, became effective on this date. Following this, contractors have a six month transition period to get up to speed with the changes and can design, install and certify to either the new or previous standard.
If you want to find out more information about BS7671 Amendment 3 then take a look at the following factsheet we found online, it gives you all the details :-
http://www.3rdamendment.co.uk/downloads/Amendment%203%20Factsheet.pdf
And here is the official page on NICEIC website in regards to amendment 3 :-