The Serbian text
Papers used in Bosnia and Herzegovina are filed in the language of the receiving body, and Serbian is the target on this route. An official Serbian translation in Reading is built sheet by sheet, so the layout of your English page survives the crossing. Headings, reference numbers and marginal notes all land in the same places.
Court appointment, not membership
The credential here is a court-appointed translator. In Serbian the title is sudski tumač, and the appointment is what allows a translation to be certified for Serbian authorities. That is a legal standing granted by a court rather than a badge issued by a trade body, and it is the difference this route turns on.
What it costs and when
Each page of the source is about £25. The count follows sheets, so a page filled by a court stamp costs what a plain letter costs. Standard turnaround is 2-4 business days, with express work back inside 24-48 hours. You can price the job yourself from the number of sheets in your scan before ordering.
Papers that cross this way
Citizenship files, property papers, pension and employment records, birth and marriage entries and school certificates make up the usual load. A certified translation for Bosnia and Herzegovina is prepared the same way for each of them, with a single stamped certificate over the bundle. Keep the sheets in issue order when you hand the set across.