cabbage

Thanks for the replies, WD 40 proved to be a temporary solution but then unfortunately the rear door lock changed it's mind and instead of being open all the time it became locked all the time. The result was that I took the car to a local independant body shop who managed to remove the door trim and open the door (I didnt ask how ) and replaced the complete door lock,cables,inner handle and latch plate with genuine parts  at a sensible price.All works perfectly now.

Thanks for your interest Trevor. I have now sprayed everywhere I can access in and around the door latch with WD40.As yet it has not resolved the issue. I wiil keep you posted.

I have recently purchased a 1999 T reg 3.0 Stype. The rear door, drivers side, will not lock ,either remotely or manually. I cannot push the black loking lever in.  Can anyone suggest a solution please.