I notices a listing on eBay for a graham farish restraint car. Obviously bound for bond street
A 'restraint car' is active most days in Switzerland. It is know as the 'jail train'.
We've chatted about it before over on the Continental N Gauge sub board.
I have seen it many times.
As you can see (by the position I was standing and the blur) a few years ago it caught me by surprise at Killwangen-Spreitenbach near Zurich, back then it was powered by an SBB RBe540 railcar (more recently powered by an SBB Re4/4II (Re420) electric loco
(https://www.ngaugeforum.co.uk/SMFN/gallery/105/704-220121110544-1050821363.jpeg)