In message , Peter Smyth
writes
That is because Clapham Junction and Watford Junction are both pick-up only
stops on some long distance routes. Therefore there is no point listing a
station that you cannot legally (in theory at least) get off at.

And a blind person thinking "I'm going to the first stop, which is
Surbiton". Gets out at Clapham. Very useful.

As for Foxton, these are the slow trains which get overtaken by faster trains
before reaching Cambridge and listing them as Cambridge trains may mean
Cambridge passengers would use them and have an unnecessarily long journey.

I said the misinformation was often justified. It's still
misinformation. What if you've arranged to meet a friend, who says he'll
join you on board the Cambridge train at Shepreth. A bit confusing, eh?
--
Roland Perry