A couple of years ago at Weymouth, "Please stand back from the platform edge as the approaching train is not scheduled to stop here".
I've seen that one quite a few times. Most often at the DC line bays at Reading.
That's it though- if the other set was going to Hull for example, it'd make sense to tell passengers. Nobody needs to know it's going to the depot, and the ECS move should really be a separate "service" for want of a better word, so shouldn't be finding it's way onto a passenger-facing system.
I think it was at Newcastle where the digital displays were showing a DMU in one of the bay platforms as "Empty coaching stock". Now I know what that means, but does the average passenger?
"I remember seeing on the screens in Leeds a Sheffield via Castleford service only for the row below to show 'above service not calling at Castleford today'
Not an announcement but I do have a ticket in my collection from Bristol to "Richmond (London)" with route "not London"
"There is currently no service between Romford and Upminster due to a faulty train. There is a good service on the rest of the line"
I once heard at Bank "London Overground is part suspended." with no further information given. It turned out that it was suspended between Romford and Upminster with a good service everywhere else - which was fortunate as I was heading for somewhere on the Watford DC (I can't remember where exactly).
On several occasions I've heard that announcement at Arlesey only for nothing to pass through.
I was once at Swindon early one Sunday evening when there was a manual announcement that a "steam train" would be passing through "at speed" in about 2 minutes. The next train was actually a HST about 15 minutes later that stopped as usual.
Back on topic: another gem in the ScotRail announcements are the "This train terminates here" announcements heard often at Glasgow Central. What do they expect the train to do, become a road train and drive on up Hope Street?
That's not exclusive to ScotRail - it's normal on GWR into Paddington and the DLR into the high level platforms at Stratford.
Not long ago I’m pretty sure I saw on the TfL status board that the Waterloo & City line was Part Suspended
This can be correct! If there is a problem on one of the platforms at Waterloo the trains will run normally in one direction but empty in the other, so it's suspended e.g. westbound only.
One of my favourite announcements is on the GWR express services from Paddington on which the first stop is Reading, where it advises passengers to change for Gatwick Airport. Because if you were in London and were going to catch your flight from Gatwick, the first thing you'd obviously do is head to Paddington and get on a train whose first stop is 40 miles west of the capital and much further away from your destination airport than where you started your journey.
I have a very dyslexic friend who was attempting to get from Swindon to Bexhill avoiding London. All was fine until Reading, where he needed a train to Redhill but got on one going to Redruth instead - first stop Taunton.
"Please use all availble doors when boarding this service, I can only use one!"
Several times I've heard automated "please use the full length of the platform" announcements when I've been the only person waiting! Euston Victoria line is common for this.