In my experience, the frequency and nature of announcements on intercity services in the UK is broadly similar to those of DB and SNCF.
SNCF tend to have announcements:
- prior to the train leaving, welcoming those aboard, and announcing the imminent closure of the doors,
- when underway giving the destination and calling pattern, and perhaps reminding people that they should have composté their ticket. They also can make mention of the use of mobile phones and security of luggage,
- there will usually be a separate announcement by the Compagnie Internationale des Wagons-Lits about café-bar, trolley and vending machine services aboard, and
- when you're approaching your destination, they announce it, along with a caution not to open the doors until the train is in the station (particularly if there is platform congestion). They may also list connections and advise that people should look for the "Correspondances" screen on the platform.
Now that sounds broadly similar to the announcements that you find on UK intercity services.
DB have slightly fewer, partly because they have come up with a more elegant solution (and one that should have been implemented here), of putting a computer screen in every carriage giving the calling pattern, and where the train is now. However in Germany, the announcements prior to arriving in a major station can be much much longer, as they will typically list all the major connections available including platform numbers, train numbers and departure times. This is in addition to the monitors in each coach, and the leaflet that is handed out to all passengers which also details the same calling pattern and connectional information. I can't remember if they also announce the bordbistro on DB trains.
Now, I'm not saying that we have it right, but we are not too dissimilar in our approaches from our nearest neighbours, when it comes to on-train announcements. On station platforms, ours tend to be longer, because we don't have numbered trains. It is not necessary to announce every calling point of a train in France or Germany, because you are either:
a. expected to know the number of the train you need
b. expected to check on the timetable bulletin that this numbered train stops where you want, or
c. expected to check the platform monitors (only applies to SNCF, DB only put principal stops on the platform monitors)
There are a few other things that are done on the continent which help reduce the necessity for some of the announcements:
- I've already mentioned train numbers, but it does mean that advance purchase tickets can be marked with "valid only on Train 335", which can help people get onto the right train, and means that the main travel document isn't in two bits like we have now (I, personally, think that the "Valid: BOOKD TRAIN ONLY" with a separate reservation coupon for you to lose is very customer unfriendly, and quite unlike any other travel mode's documents).
- A "Composition des Trains" poster or screen. The West Coast still has the infrastructure on platforms to support something like this (coloured zones), but it really would help if passengers could be pre-stood in the right portion of the platform for their coach. These posters also show where the buffet car is, so you can know long before the train arrives.
The combination of these means that you can shorten or remove the warning about advance purchase tickets, and you don't need to explain the layout of the train (First class is at the rear...)