The language a Haitian office files in
Haiti keeps its written public record in French, so an English certificate from Reading is read once a French version sits beside it. The two are handed over together. The French does not stand in for your paper; it states the same thing in the language the receiving register already works in, line for line.
What traducteur assermenté means
A traducteur assermenté is a translator who has sworn an oath before a court and may therefore certify work for French official use. On this route that standing is required, so the signature on the certificate is a legal act rather than a formality, and it is why the page carries a date and a stamp.
What the certificate says
The certificate of accuracy names the translator, states the source and target languages, and carries a date. It sits on top of the set. A certified translation for Haiti is judged on that page as much as on the text, because it is the part that ties the French wording to a named, sworn person.
Paying by the page
Pricing is about £25 for each page of the source, and the count comes from your own scan, so nothing in the total is a surprise. Standard turnaround is 2-4 business days and the express lane runs at 24-48 hours. A long file costs more only because it holds more sheets, never because the wording is harder.
Do not post the only copy
Never put your one and only birth or marriage certificate in the mail for a translation job, because a lost civil record is replaced only by ordering a new one. A clear scan is enough for the work. Reading Register Office at Civic Offices, Bridge Street, Reading RG1 2LU issues certified copies of birth, marriage and death records.