The language South Africa requires
A certified translation into English is required for documents used in South Africa, so any sheet in the file issued in another language needs an English version beside it. A certified translation into English in Nottingham produces that version as a separate document. The source is not marked, stamped or altered by the work in any way.
Nothing is lodged anywhere else
There is no central place where a finished translation is kept. The translator signs it, you receive it, and that is the whole of its existence. Set beside a birth entry, which sits in a register and can be printed again decades later, a signed English version lives only in the copies that were made of it at the time.
What to write down
Four lines are enough: the date the work was signed, which sheets it covered, which version of each source it was taken from, and who has been given a set. Written at the time, it takes a minute. Rebuilt a year later from memory and a folder of scans, it takes an afternoon and is still uncertain at the end of it.
The half that can always be rebuilt
One part of the file can be recovered whatever happens. Where a record is a civil one — a birth, a marriage, a death — Nottingham Register Office at The Council House, Old Market Square, Nottingham NG1 2DT holds the entry and can print a fresh certified copy of it. That office does not translate anything and keeps no copy of a translation, so the English half is the part your own notes have to cover.
Cost, pace and the second run
The rate is about £25 for each page as issued, and standard production takes 2–3 business days once readable scans exist, with a 24-hour route where a date is close. A certified translation for South Africa is quoted on the sides you include, and a repeat run is quoted the same way. Knowing what the first run covered is what tells you whether a second is needed at all.