On Mon, 25 Aug 2003 11:42:19 +0100, The Natural Philosopher
wrote:



It probably does unscrew. IME, these plastic fittings seize together
over the years.



Yes. They are chep. Smash it and get a new one.
Turn power off first :-)


Be aware of possibility ofslightly different diameters and screwholes
in different places. resulting in bits of undecorated ceiling to be
made good.

DG