Ok for those of you still interested, this afternoon I stripped down the drivers door latch to check if there was any fault and low and behold there is a small pivot pin and an equally small spring lying in the bottom of the latch . I took a couple of pictures but I'm garbage at posting pictures. The normal source for these is MGF n TF bitz but alas they are out of them at the moment and Rimmers must be gold plating the ones they have as they are .... £150 !
Has any one repaired one of these
John