The road that ends at home
Some destinations pull a second desk into the job: the British certificate goes on, and a consular mark is then added on top before the file counts as complete. This destination is not one of them. Here the certification is a single stage, which means the paper is finished while it is still inside the United Kingdom and never waits on an office elsewhere.
That has a consequence worth stating early. Every date in the schedule is a British date and every charge is a British charge. Document legalisation for United States, in the sense of a chain of marks applied one after another, does not arise on this corridor; one certificate carries the sheet the whole way.
Where the United States sits
The United States joined the Hague Apostille Convention in 1981, and the effect for a sender in Belfast is direct. An apostille for United States is read as it stands, without a further mark laid over it, and an apostille from United Kingdom to United States therefore travels on its own from the moment the Legalisation Office returns it.
It is worth knowing what that does not mean. The certificate confirms the signature or seal on the sheet beneath it. It does not vouch for what the document says, and it does not decide whether this particular record answers the request somebody made. A single-stage route removes a stage; it does not remove the work of sending the right paper.
Everything happens on this side
The paper starts in Belfast. Where it is a Northern Ireland civil record, the General Register Office for Northern Ireland (GRONI) at Colby House, Stranmillis Court, Belfast BT9 5RR issues certified copies of birth, marriage and death entries, and a fresh certified copy can be the sheet that carries the certificate abroad in place of the one you hold.
The certificate itself comes from the FCDO Legalisation Office, PO Box 6255, Milton Keynes MK10 1XX, which works by post and keeps no public counter. No apostille issued in Belfast for use in United States is stamped in the city; the mark is applied centrally and the sheet returns by mail, which is why the postal legs belong in the schedule.
Two speeds, and who each one is for
The published charge is £45 per document by standard post, or £40 per document next-day where the sender is a registered business. Those two figures are worth reading closely, because they are not a straightforward choice of speed. Which one is open to you depends on who is doing the sending, not on the document being sent.
The next-day service is described as being for registered businesses, so the standard postal route is the one an individual sender uses. It is an unusual arrangement in that the lower figure belongs to the quicker service. The count is per document in both cases, so three certificates inside one envelope attract three charges rather than one.
What a single-stage route takes off the list
Set beside a chained route, this one removes a whole class of planning. There is no second desk to reach, no second charge to allow for, and no interval spent waiting while a sheet travels on after it comes back. What you need for an apostille for United States is a correct sheet, the British certificate, and time for one postal round trip.
That concentration is also where the risk sits. With one stage there is no later desk that might notice a problem, and the certificate belongs permanently to the sheet it was applied to. Where the paper is a record that can be reissued, a clean replacement costs another copy and another fee; where it cannot be reissued, the choice made at the start is final.