jefmcg
Guru
ok, but this was SWT, and if they have guards on the Saturday afternoon South West London loop train, it's reasonable to assume they have guards on every train.Definitely no guards on First Great Eastern (though they are pretty good at having ticket inspectors on board quite regularly).
But (and this is why as a regular SWT user, I'm unsure of the rules) they mostly don't walk up and down the trains, at least in the Oyster zone.
Edit: It's called the Kingston Loop