The light switch wont even click.
Sounds like that during your "trial and error" you have banged 230v across the switch. They don't like that so you'll probably need a new switch.
What sort of switch is it?
Well I have to thank everyone for their advice with this. I bought a multimeter along with a new switch from toolstation, and its all fixed.
NOW, I'd like to know where I'm going wrong with getting the new light fitted. The light I've bought has 1 green, 1 blue and 1 brown wire and has a terminal block with 8 ports in it.
I connect the wires through the terminal port (as it says in the instructions) but then I have some other wires left over. What do I do with these?
View media item 42388 View media item 42389