Note that at this stage I'm having an electrician take care of this as I don't want to take any chances but was hoping someone would try to explain to me how this works just to see if I'm on the right track? Removed a ceiling rose and stupidly forgot to write down what was connected where. I understand that one of these 3 cables contains a switched live. I have a multi meter which I could use to test to found out which one. I'm not going to chance it - just wanted to see if i've got it right in my head. There is another ceiling rose on the other side of this room connected to the same circuit. Photo below shows the wiring: And i found this diagram: My understanding is: - Find the switch live (test between red and black wires with light switched on until voltage detected on multi meter set to 600 AC). Wire the black cable of the switch live into the live on the light fitting. - Wire the red cable from switch live and the remaining red cables into a terminal strip. - Wire the black neutrals between lights (remaining cables that are NOT the switch live) into a terminal strip then subsequently into the the neutral on the light fitting. - Make sure all earth cables are grouped into a terminal switch then subsequently into the earth connection on the light fitting. How does that sound? Again - I'm not attempting this. Just want to see if I've got the theory correct. Electrician is attending!