I presume the point of the apparently unenforceable restriction is purely in the interest of
pax▸ travelling beyond Reading who otherwise have to put up with Reading commuters crowding them out?
If so, why not just erect a sign at the platform entrance (and announce it both on train and station) before departure that pax to Reading will be charged ^10 extra as supplement. Agreed such pax would have to believe that a TTI would be walking through, which would be done occasionally. Actually it's only FO anyway isn't it? .
That procedure should clear the decks, I suggest.
