The Pins quoted by NellyTheRoc were not the ones I was original referring to, so it might be the case that i got the original issue wrong (Doah!)
There is only the one micro switch I was referring to and this is on the Passenger Side and concerns the 5th Arc.
The following picture shows the threaded bolt that is tightened by use of a star-allen key and the ball-bearing micro switch.
The other picture is of the drivers side, where there is not micro switch and the bolt on the threaded nut that threw me!
Hopefully this makes more sense. Again is was the tigthing of the threaded bolt on the Passenger 5th arch that solved the issue. I can confirm that the hood has been working well ever since