In uk.d-i-y, John wrote:
I walked to the station this morning and counted 8 security lights with
filament bulbs - you know the bulkhead or carriage lamp with PIR type
and a further 26 front door/outside lights none of which could take a
CFL. I didn't observe any with a CFL or which could readily take a CFL.

AAMOI, how do you know they couldn't take a CFL? Is it an electrical or
a mechanical problem? We have two such lights (PIR-operated bulkhead
lights), different designs, and I fitted them both with CFLs a couple of
years ago, no problem.

--
Mike Barnes