Just one question:-
Why?!
Makes them feel important maybe?
The purpose of uniform clothing is to enable staff of that organisation to be identified. The wearing of that uniform by someone not entitled to wear it is self evidently misleading even if there is no explicit intent to mislead.
The realities and practicalities of rebrands / new operators inevitably means that "non current" uniform will continue to be worn by members of staff going about their duties for a period of time. Wearing of "non current" uniform by someone to whom it was not issued legitimately by that organisation can only serve to confuse and possibly deceive.
Sorry if this seems harsh but wearing it is asking for trouble.
Incidentally I have often thought that the wearing of mainline toc (and similar) high viz on heritage railways can also serve to confuse and i am surprised that heritage railways permit this to happen.
I've seen on quite a few Heritage lines volunteer staff who have ex-mainline kit and seems to have some sort of cache. Can't think why. Irony is that new rail-spec orange hi-vis (orange but no logos unless you as a company put your own logo on) is very cheap, and thanks to Network Rail's insistence on a minimum standard of kit for their contractors, the quality is very good for the money even compared with a few years ago.
The
last thing I ever want to do is wear my work hi-vis if I'm on a station, at the end of a long night shift on site there's nothing worse than having irate passengers ranting at me because the first train of the morning is late (Yes I know you need to get to work, I want to get home just as much), having to dig out the plastic smile and be polite.
I suppose, technically, that although issued to staff the uniform remains the property of the TOC. When we've had new uniforms, we've been asked to return our old one - knowing how protective of their brand Virgin are, I'd be surprised if they hadn't required the old Virgin-branded coats back.
So if someone took that jacket, sold it online (without consent of the owner), then depending how you look at it that could meet the threshold for theft. And if you then bought it, legally the original owner still has a right over it. Obviously it's not clear who the original owner is now the TOC doesn't exist, and they might not care anyway, but wearing it around a station might not be the best idea.
Generally, rail companies do require their logoed kit back- security reasons. Mostly they are quite insistent at getting it back too. Problem with getting all the hi-vis back in is that so much is issued- it gets dirty and the "hand one in to get a new one" approach only works with fixed depots- so some inevitably ends up on the second hand market, there's always the odd rail staff member who recognises the potential value of stuff to an "enthusiast" when sold on a well-known auction site.
I have worked for various rail organisations over the years with a variety of logos, and generally platform staff don't bat an eyelid on the odd occasion I have had no option but to travel to/from work with my hivis jacket on. Maybe something didn't "look quite right" for the OP to be challenged?
TPO