Ok  update . First swopped over both rear switches.. . same outcome o/s rear window will not close until ignition turned off /key removed/key returned & ignition turned back on.
Also changed drivers door switch bank for another . .. same result .
Put all original switches back in . . .still the same result.
BUT . . .  noticed that the o/s rear puddle light was not lighting when door was opened 

So removed pin switch & spryed inside with switch cleaner  . . puddle light now comes on every time  . . .&   
rear window is now operating as it should  . . all be it a bit slow as it has probably not been used for quite some time .
Also  . . although the central locking worked from the fob when I got this car recently  . . . the dead locking did not. . .  now it works 
 
 
Was the sticking puddle light pin the problem with the window & the dead locking, or have I just moved or touched something that has made these issues work again?  
 
 
It seems fixed so thanks guys for your input 
 
 
I will however start another thread on the subject of the central locking not re-setting when you put key in turn to position II & push lock . .  .as this another fault I need to look at