Recently on a 455 out of Waterloo, on both visual and verbal systems...
At Vauxhall:
"This is London Waterloo"
At Clapham Junction:
"This is Vauxhall. This train is for London Waterloo. The next station is London Waterloo."
At Earlsfield:
"This is Clapham Junction. This train is for London Waterloo, calling at Vauxhall and London Waterloo".
( By this time several passengers were starting to laugh ).
At Wimbledon:
"This is Earlsfield. This train is for London Waterloo, calling at Clapham Junction, Vauxhall and London Waterloo.
You can guess the rest... all the way to Epsom ( where several passengers were hysterical with laughter ) at which point it was announcing:
"This is Ewell West. This train is for London Waterloo, calling at Stoneleigh, Worcester Park, Motspur Park... etc etc etc"
At this point, having got off, I approached the guard and told him what the system was doing. He really had no idea as he couldn't hear it in the rear cab... He told me he would switch it off immediately and make manual announcements for the rest of the journey.