In message , Kat
writes

The Train Operator would be well within his/her rights (outside the
specified times and on wrong sections of the line) to ask you to leave the
train.

And frequently do - In fact I did today :-)

I never do with a Brompton though as they are specifically allowed.
--
Steve Fitzgerald has now left the building.
You will find him in London's Docklands, E16, UK
(please use the reply to address for email)