THC wrote:

My wife wants to know whether "Mind the Gap" as used on London
Underground is used on railways, metros outside London (I'm pretty
certain that announcements are made on Platform 17 at Clapham Junction
- the phrase is certainly picked out in white paint as you step off
the train) but for the life of me I can't think of any examples of
seeing it written or hearing it on PA systems elsewhere in the UK.
I'd be grateful for any examples, o wise ones!

It's used frequently at Manchester Oxford Road. I noticed it in
particular last night on a transpennine service because the tone changed
so abruptly from the usual 'arriving at station X' announcement. I'm
pretty much inured to the constant (mostly) pointless announcements on
trains these days that I switch off to them.

--
(*) of the royal duchy of city south and deansgate
www.davidhorne.net (email address on website)
"The fact is that when I compose I never think of and never
have thought of meeting the listener." -George Perle