After a very helpful member logged my faults with vcds today there a 2 issues with drivers side door. 

The illumination light on the bottom sometimes works sometimes not and heated mirror has a fault both picked up on vcds.  I noticed the illumination before but was unaware of the mirror demister

 

Any ideas I've tried wiggling door wires in loom.  Any help appriciated

Probably worth checking the wires by pulling back the rubber...