Czech is the language the file is read in
Papers used in the Czech Republic are read in Czech, so a certified translation into Czech in Newcastle upon Tyne is what makes an English record usable there. Everything on the sheet is carried across: the heading, the entry number, the registrar's title, the fee line and the words printed inside each stamp. A clerk who finds a blank where the source has text treats it as missing information, not as a tidy summary.
One spelling, held everywhere
Pick the spelling that appears in your passport and keep it across every paper you hand in. Czech offices match a file to a person by comparing strings of letters, not by judging that two versions look close enough. If a middle name is on one record and missing from another, or a place of birth is written in two ways, sort that out before any Czech is typed. The translator follows the source and will not silently correct it for you.
What the Czech Republic accepts
The Czech Republic wants a sworn signature, and that comes from a court-appointed translator. The appointment is personal: a court grants it to an individual after testing them, and it can be checked back to that court. So the pages you receive are not only accurate, they are answerable. That is the difference between a good translation and one an office will act on, and it is why the signer's title is written out in full.
Cost per page and the clock
Cost follows the paper: £25 for each page as issued, so count the sides you are sending and you know the figure before you start. Time follows the quality of the scan. From a clean image, standard work runs 2–4 business days, and the express route closes in 24–48 hours. A dark or angled photo is what adds a day, because each unclear letter has to be resolved before it can be typed with confidence.
The set that comes back
Three parts arrive together: the Czech text, a copy of the page it was made from, and the signed wording that ties them. Hand them in as one bundle and leave them fastened. Where the office reading your file wants more weight behind the signature, the translation can also be notarised, which adds a further layer on top of the court appointment rather than replacing it.