The route out of Wolverhampton
Everything begins with the paper itself. For a civil record, a fresh certified copy from Wolverhampton Register Office, at the Civic Centre on St Peter's Square, means the family's own original never has to leave the house; for a company or education record, the version already signed or sealed by its issuer is what moves forward instead. That document then goes by post to the Legalisation Office (Foreign, Commonwealth & Development Office) at PO Box 6255, Milton Keynes, the office that authenticates papers from anywhere in the UK, not a counter specific to any one city.
Once that first certificate is fixed to the page, the parcel is not yet ready for Papua New Guinea. A further legalisation stamp from the country's own diplomatic representation still has to be added before the document is treated as complete. Only when both stamps sit on the page does the paper move on to whoever in Papua New Guinea is waiting for it.
Why an apostille alone falls short here
The apostille and full legalisation both exist to prove a UK document is genuine, but they are two different depths of the same idea, and which one a country needs is entirely down to that country's own rules. Some destinations accept the apostille as the finished answer; Papua New Guinea is one of the destinations that does not, expecting the extra legalisation stamp on top of the UK authentication rather than instead of it. Skipping the second step because the first one felt sufficient is the most common way a document for Papua New Guinea gets returned.
This does not make the apostille pointless for this corridor, only incomplete. An apostille for Papua New Guinea issued by the Legalisation Office is still the required first stage; the destination's own diplomatic staff will not add their stamp to a document that has not already been through the UK stage. The two stages run one after the other, never as a choice between them.
What the UK stage costs and how long it runs
The Legalisation Office's fee is £45 per document by standard post, or £40 per document through the next working day express service, an option open only to registered businesses. Each document is billed on its own rather than as a set, so several certificates sent together are charged individually, and postage on both legs is a cost that sits outside these figures.
Standard turnaround for this UK stage runs up to 25 working days, and that clock has to finish before the second, destination-side stage can even start, so the overall wait for Papua New Guinea runs longer than the UK figure by itself suggests. A registered business under real time pressure can shorten only the first half of the process using the express route; the second half's timing sits with the destination's own diplomatic office, outside anything this page can promise.
What Papua New Guinea expects once both stamps are in place
Once the second stamp is added, a receiving office in Papua New Guinea generally reads the completed bundle as finished proof, without asking for anything further from the UK side. What matters most at that stage tends to be the ordinary detail of the underlying record, correct names, matching dates, and the specific thing it certifies, rather than the mechanics of how the two stamps were produced. An education certificate used for work recognition and a company document used to register local operations both follow the identical two-stage route.
Because Papua New Guinea sits outside the group of destinations where a single UK apostille finishes the job, it is worth treating every document for this corridor as a two-part project rather than a quick single step. Building the second stage's separate timeline and separate fee into a plan from the outset avoids the frustration of discovering, only after the apostille arrives, that a further stamp still stands between the document and its intended use.