The screw in arial itself is fine, it's the base that is broken
I will "proceed"

to take the interior light out and see what confronts me!

I hope it's just a nut that needs to be undone.
Either way I have sooo many jobs to do on the car it may be a while before I get round to sorting the radio, but when I do I will let you know how it went.
I intend to take my time and enjoy messing with the car, rather than letting it become a huge and unpleasant chore, so it may well be months untill I have got the car up to what I consider to be an acceptable standard..

but summer is on the way, and once its done, then I will have a brill lil car again.
Thanks for all your help..
'
James. (Nr M67 East of Manchester).
Dark Blue ZX 1.9D Auto 1994 'L' 5 dr (modified) Aura. 98K miles used daily. Ave mpg 40
Wedgewood Blue 75 CTD auto Connoissaur. 2002. 144k. used daily. ave mpg 40 ish.