So every final circuit is protected by one RCD then or have I read that wrong.
If you modify the product, so it is no longer how the manufacture designed/intended it to be, I believe this is not acceptable.
Think this is mentioned in the regs somwehere.
heard of an rcbo?
i can get Wylex ones for £15. Or crappy europa ones for £6/7 not sure if they fit wlex's boards though