Fixed the last two outside lights... 
Replacing outside lights...
Should we start a competition to guess how many will be working afterwards? 
They all did... 
Well, yes... Sort of...
I did replace five lights with all the associated drilling, filling and painting, etc.
But there was another light fitting (with no bulb in it) and another 'light' which was covered with a blanking plate.
Neither had power no matter how many light switches I flicked or combinations thereof....
I eventually decided to fill in the two lights and replace with solar powered jobbies...
But then I had a thought! What if a previous owner had removed a light on the patio and replaced it with the ceiling fan that was there. Logically, they wouldn't want two other lights on the same circuit that would have to be on all the time the fan was on!
So I dug into the switch, found some unconnected wires, rewired three circuits and it all works perfectly!
Now it looks like this...
