Roland Perry wrote:
Those trains don't have guards, and haven't had for a very long time.

I meant uniformed security guards (as you say below, they were used by
Wagn between Potters Bar and Stevenage and were totally useless but at
least wore Hi-vis vests with 'SECURITY' written on the back). A RPI
would obviously have the necessary equipment to issue penalty fares,
but I doubt they'd get involved with incidents - thus they're unlikely
to be seen at night when the network becomes free to use. This applies
on the Thameslink side too.

Revenue Protection staff patrol a small number of trains, and security
guards were employed by WAGN on late night trains (and were allegedly
withdrawn by FCC, but it's always possible they've reinstated them).

They must have done then, but definitely a different company (I think I
heard the name 'purple' mentioned by BTP). Having plain clothed
security on all late night trains (there aren't that many running)
would be a very good idea for both passengers and the train company.
Unfortunately, if they are ONLY there to protect property, then I don't
see why I should be that impressed.

Jonathan