Start from the list, not the pile
Most people arrive with more paper than they need. A folder builds up over years, and sending all of it feels like the safe move. It is not safer, only slower and dearer. The Swiss letter names the records it wants, and that list is short by design. Read it twice, tick off what you already hold, and treat everything else as out of scope until somebody asks for it.
The language Switzerland requires
German is what Switzerland asks for here, so every record on your list becomes a German page. That has a plain effect on the triage: a record you are unsure about is not free to throw in, because it will be written out in full like the rest. An official German translation in Plymouth is priced and timed by the page, which is why the list deserves an hour of your attention.
The signature that makes it count
A German page is only half the job. The court-sworn translator signs a dated statement that the German matches the record supplied, and that signature is what a Swiss office acts on. None of the triage changes this. Whether you send one record or four, each comes back signed in the same way, and each is counted the same way when the bill is drawn up.
Per-page cost and turnaround
The rate is £25 for each page of the record, which makes a long file easy to forecast and a trimmed one visibly cheaper. Turnaround is 2–4 business days once a clear copy is in hand, and 24–48 hours on the faster option. Adding a record a week later is not a disaster, but it starts its own short clock rather than joining the one already running.