Japanese is what the file is read in
Records handed in across Japan are read in Japanese, so a certified translation into Japanese in Newcastle upon Tyne is what turns an English sheet into something a clerk there can act on. The rule is flat: a Japanese version is required for papers used in Japan, and that holds whether yours is a school record, a company file or a civil entry.
The promise is drawn narrowly on purpose
A certified translation for Japan carries one claim, and it stops there. It says the Japanese and the source hold the same content, and it names both so anyone can lay them side by side. It says nothing about whether your record is accurate, whether it is still the current one, or whether it is the paper someone asked you for. Those are separate questions with separate answers.
Four things it cannot do
It cannot turn a photocopy into an issued record. It cannot make a draft final. It cannot merge two papers into one tidier sheet. And it cannot speak for a page you did not send, because the signed statement names exactly what was rendered, so a sheet left out of the scan sits outside it. Knowing those edges is what stops you paying for the wrong thing.
Who signs it, and on what basis
The Japanese is written and signed by a certified Japanese translator, and the certificate of accuracy goes with it. That sheet gives a name, a date and a signature written by hand, and it names the record the Japanese came from. No court sits behind it and no oath is involved. An official Japanese translation in Newcastle upon Tyne is therefore tied to one named person rather than to a company badge.
Per-page cost and turnaround
Cost attaches to the page: £25 for every page as issued, so a record printed front and back comes to two. Standard work takes 3–5 business days from a readable scan, and express takes 48 hours. What adds time is a smudged digit, which has to be settled with you before anyone types it.