Fished the car out of the garage - its possibly got a bit of a diesel / air leak as it was initially a bit reluctant to keep going once fired up.
Cooling system seems fine - certainly no more mysterious water loss, fans came on ok.
Accumilator sphere, initially clicking every 7 or so seconds - though this improved as the car was run.
Rear windows now working - and has to be the easiest fix in history as I had been replacing the wrong fuse all along by the looks of it - eitehr that or last time I had a fiddle I forgot to put the fuse back! Anyway one new 30A fuse and all is well in the garden

Front drivers has a shagged regulator which needs substitution - but works after a fashion for now.
More buggering about with a fuse which seems to have been bodged at some point led to the STOP solenoid suddenly not working any more - I removed a fuse in a fly lead which I assumed was for the towbar electics - and suddenly the car stopped working (well wouldnt start). Some previous cowboy bodge - still I now have my own immobiliser

Probably the only things left to fettle (apart from general tidying of paint work etc) is the rear engine mount - which is a little bit buggered, but not that bad as it has a solid mount which is slowly breaking up. The OS CV boot and most alarmingly a HP pipe which is probably about to go west as it has been rubbing on a crossmember.
Progress is being made - slowly.