The papers this actually applies to
English is the working language of Malawian public offices, so the only question is what language your record came in. A UK-issued paper normally travels untouched. The reason this page exists is the other kind: a record made abroad, now held in Wolverhampton, that a Malawian office cannot read without an English version beside it.
English, and how much of the sheet is carried over
A certified translation into English in Wolverhampton reproduces everything on the page. Seal wording is written out. Registration numbers, revenue stamps and correction notes in a margin all appear. Where handwriting genuinely cannot be read, it is marked as illegible rather than guessed at, because a guess that later proves wrong is far more trouble than an honest gap.
The certificate of accuracy, and why it matters
The route here is a certified translation with certificate of accuracy. That certificate is a signed page of its own, naming the translator, the languages, the date and the pages it stands behind. It makes the difference between a helpful English rendering and a certified translation for Malawi that a registry or a ministry will actually accept and file.
Rate, count and delivery
Pricing is about £25 / page of source, counted on what you send rather than what is produced. Standard work runs 2–3 business days, with 24 hours available for a rush. The clock starts once a readable scan is in hand, so a shadowed photograph of a stamp is the usual thing that costs a day before any translating begins.
Fresh UK copies, and what a Lilongwe desk reads
Where a UK civil record forms part of the file, Wolverhampton Register Office at Civic Centre, St Peter's Square, Wolverhampton WV1 1RU issues a new certified copy. Letting that copy travel keeps the record you already hold out of the post. The office issues records only and takes no part in translating or certifying an English text.
In Malawi the certificate is read first, the pages are counted next, and the names are matched last. An official English translation in Wolverhampton is accepted on being complete, dated and signed. Files stall over gaps far more often than over wording, so an annex left out of the scan is the risk to watch.