In article .com,
cynic writes:

New? - Brown Blue Black Grey Insulation/Identifier colours, usually
with a Grey sheath ? Of course elsewhere in the world current colours
could be different :-)

Tails from the cutout to the meter are "suppliers works"
and don't come under BS7671. They can be any colour the
supplier likes.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]