I think the Littlehampton stoppers have been in the timetable for many years, although I couldn't swear that the station calls North of Horsham haven't changed.
Perhaps it has been converted with more stops north of Horsham in recent years - maybe that's what I'm thinking of. I believe there was a major change involving it at some point. It may even be in the endless archive of news articles on Southern's website, somewhere!
The 06.33 from Horsham has always seemed a pretty useless service. From Littlehampton there's a faster train to London Bridge via Hove leaving 5 minutes before it and from Horsham and the Arun Valley the 06.50 ex-Horsham is faster and overtakes the 06.33 before East Croydon. I assume that it is largely aimed at commuters from the local stations via Redhill.
You are correct on all points, I think. I use the stopping service in question on the odd occasion (very rarely though). These are my observations too!
It appears that the balancing evening down working no longer runs via Horsham (I've used that a few times in the past and it was very lightly loaded South of Gatwick).
I certainly can't think of any comparable one-off southbound service having existed in the last couple of years.
It starts from platform 1 by stock that appears by magic, as a manager said the other day "the timetable is still being tweaked".
Hmmm. I'm guessing ECS from the Littlehampton area or from the sidings at Horsham, then. But who knows...
OBS training?
What, you mean more than 'this is a PA handset, and this is the book of inane scripts we want you to use'?
Not quite. They know that bit.
There are different procedures for various things on 700s - locking out the train (it's very different...), how to use the ramps, dealing with the toilets, the limited numbers of Guard (ha) Operating Panels, etc. etc. Plus documentation to be revised on stuff like SDO / accommodation in platforms.
How much this will all be used by OBSs is a different matter!