In message , at 16:01:12 on
Mon, 26 Feb 2018, Recliner remarked:

I managed to snatch one inside the Canal Tunnel, and noticed that the
concrete tunnel linings say 'CTRL'

Did you also notice the train rolled back slightly inside the canal
tunnels when it came to a stop (a shorter stop than the earlier
southbound which was stuck there a good three minutes).

Were you perhaps the chap at the front by the First Class, with the
orange jacket, who also took shots down the inside of the train?
--
Roland Perry