Hi all
Please ignore my last ravings above, having read through all the thread and gone outside with a torch in the damm cold (again),  Kev is absolutelty right, remove the top dash rail and there are three screws  :oops: 
So.....  tomorrow I will be taking more of the defender to bits in order to put it back together again  :idea:  :roll:   :?   
Dave
(Thanks Kev)