What you are actually ordering
People picture this as having a document translated, as though the document were the unit being bought. The unit is really a pair: this source, into that language. Uzbekistan reads Uzbek, so the pair is fixed at the very start, and the pages, the signature and the price all hang off that single choice.
One statement covers one text
The signed statement says that a named translator wrote this Uzbek text from that source, and that the two agree. It cannot be stretched over words the translator never wrote. A certified translation into Uzbek in Stoke-on-Trent therefore arrives as a closed set, and any second language opens a second closed set with its own reading, pages and signature.
Who writes it and what they hold
The person producing the Uzbek is an ITI or CIOL-qualified certified translator, and the certificate is of the kind UK authorities such as UKVI and GRO accept. It is dated and fastened to the pages it covers. What the set carries, then, is a qualified name tied to one specific body of text and to nothing wider than that.
Cost and days, counted per set
Each set is priced at £25 for a side of paper, counted as the record was issued rather than as it might be reformatted. Standard work takes 2–3 business days once a readable scan lands, and the express route brings a set down to 24 hours. Where two languages are wanted, each one is counted and timed in its own right.
One clean copy, more than one job
Stoke-on-Trent Register Office supplies fresh certified copies of civil records from the Civic Centre on Glebe Street and works by post, so nothing about it requires a visit. A single clean copy can feed more than one language job, because copying and writing are separate steps. That is the one place where ordering two languages genuinely saves you something.