Dave Plowman wrote:

It's only *some* tungsten lamps which are 'banned'. Mainly GLS (basic
lamps). 'Specials' - like it seems you have - are still available.

Thanks for that. Mine are R50s - I couldn't remember the designation when I
wrote my last post. I'm puzzled though: what's the justification for doing
away with the larger bulbs and not the smaller?