In message

t, at 17:01:31 on Fri, 1 Jan 2016, Jeremy Double
remarked:

Not a councillor since 2014. I'm just a pensioner these days.

So, under the UK tradition you do not retain the title after your term
in office?

US tradition is slightly more familiar to me. Certain titles,
President, Congressman, Judge, remain with the holder after his term

It seems to happen in the ex-military, but not the sort of roles you
mention. I don't think people can even keep a title like "Professor"
unless elected to one of the few Emeritus Professorships.

At most UK universities, professors are commonly given an Emeritus title
when they retire...

Yes, there are many around, but how automatic is it.

nb. To be a UK Professor requires one to be in effect head of a
department, the USA-ians apply the term much more widely I think.
--
Roland Perry