On Tuesday, 29 December 2015 18:42:59 UTC, Lew 1 wrote:

Is it a "closure" though, rather than a planned timetable alteration for
the period in question? I don't know - perhaps in previous years they
ran through to the City during the whole holiday.

Honestly, I don't know.

But I really think it's a moot point...

What is a "moot point"?