John B wrote:

Hmm. I understand the /kind/ of operations you're talking about, but
they're extremely unlikely to be relevant he SWT Portsmouth
services always have a ticket check between London and Woking, so
there's absolutely no point in carrying out the kind of raids that it /
is/ worth doing between barriered stations on OPO trains.

Except to catch this kind of thing.

(in any case, the problem for the OP in this case isn't being caught
in a raid, because there is no point on the journey when he doesn't
have a valid ticket.

He doesn't have a valid ticket London-Woking. It just won't be possible
to prove that until after-the-fact.
--
Michael Hoffman