SUCCESS!!!! 
It was indeed a silly oversight on my part 
In my defence i've had that many wires under floors, in and out of walls , did have the foresight to label them all up.........except I labelled the wrong ones!!! doh
infact so confusing if you now asked which was where i really wouldnt have a clue!!
Does explain why the doorbell rang every time i pressed light
.
Im totally made up, thankyou for all of your help, it really is very appreciated.
A couple of years in the making we have now masterlinked the house. 
jay