Please see link below for the first corrigendum to the Green book, a whole section!
http://electrical.theiet.org/wiring-regulations/updates/bs7671-2008-2011-corrigendum-jun13.cfm?type=pdf
Scoobs accepted!
http://electrical.theiet.org/wiring-regulations/updates/bs7671-2008-2011-corrigendum-jun13.cfm?type=pdf
Scoobs accepted!