Well, the RAC turned out this morning and guess what, the car was behaving itself as if nothing was wrong, don't you just hate that when that happens!!
The guy operated the remote initially and no hint of a problem, I tried the normal press the button on the door, no problem.
The guy checked the Renault Database for any faults that resemble what I described, as he had not come across this problem before, and no issues highlighted.
As I have had a small problem with the driver's door button, still waiting for this to be rectified, speculation is that the switch was still sending a lock signal which was blocking any new commands to unlock, logically I would say that is a sound argument.
On another note, he did say they have very few call outs for the Kadjar, generally, so that hopefully speaks volumes for the reliability of the car, Touch Wood!!