A name on the certificate, not an anonymous stamp
A certified translation in Manchester for Mongolia is only as strong as the person standing behind it. The certificate that travels with the Mongolian text names one translator, carries their signature and states the body they belong to. That is the whole point of certifying. Someone identifiable puts their own name to the claim that nothing in your record changed.
Mongolian is the language the file has to be in
Offices in Mongolia work in Mongolian, so a document used there has to be in Mongolian before anyone can read it. When you order a certified translation into Mongolian in Manchester, every line of the source is carried across: headings, stamp text, printed notes and the small print under a signature. Nothing is shortened and nothing is quietly dropped.
What the signed statement actually says
The certification on record here is a certified translation of the form UK bodies accept, UKVI and GRO among them, and it rests on a signed statement of accuracy rather than a court appointment. You do not need a sworn Mongolian translator in Manchester for this. The credential is an ITI/CIOL-qualified certified translator, and that qualification is what the signature stands on.
Paying by the page, and the two clocks
The rate is ~£25 / page, so a one-sheet civil record costs far less than a long court file. Standard turnaround is 2–3 business days from the moment clear images land. Express work comes back in 24 hours. Only the page count moves your total, which is why a quick count of the sheets is the first useful thing you can do.
Get the right copy in Manchester first
Translate a copy you can afford to be without. For a civil record such as a birth, marriage or death entry, a fresh certified copy can be ordered from Manchester Register Office at Heron House, 47 Lloyd Street, Manchester M2 5LE, and the translator can work from that instead. Your own original then stays in the drawer where it belongs.