Thanks Nodge, i stripped the switch out and tested it, yeah its not working.
It was wet in there and such a small switch - the click it makes did give it away i suppose.
No amount of contact cleaner and airline were able to get it back until the new loom arrives!!
It is obvious someone has been there before - couple of clips out of shape on the panel cover and the number light housing itself is not on good shape - super glue and clamps over night job to sort the brackets back out.