Hi All
thanks for your input. I have spoken to a few more qualified experts and I thought you may like their expert advise for future enquiries.
I haven't repaired this yet but I will update this post once I have tried the following.
Advise: 'replace the drivers door lock assembly, it controls the signal to the other doors to open and or close from the remote sensor'
it makes sense, so I will give it go.
Watch this space
Cheer
Shaun