Apostilling UK Documents for Argentina: Costs, Timelines, and What to Watch Out For

Argentina is part of the Hague Apostille Convention, which means UK documents can be authenticated for use there through a standardised process. The FCDO (Foreign, Commonwealth & Development Office) is the competent authority in the UK.

The boring bit — and the bit that trips up the most people — is that getting the apostille is only step two of four. Sourcing the right original, getting it apostilled, shipping it to Argentina, and having it translated by a certified Argentine translator are all separate steps, each with their own timeline. Get the order wrong and you're back at the start.

What Is an Apostille?

An apostille is a certificate issued by a government authority that confirms a document is genuine and the signature/seal on it is authentic. It's the international standard for document authentication between countries that have signed the Hague Convention (both the UK and Argentina have).

Without an apostille on your UK documents, Argentine immigration authorities, notaries, and courts won't accept them as valid. It doesn't matter how recent the document is or how official it looks — no apostille, no acceptance.

What Documents Need Apostilling?

For immigration purposes, you'll typically need apostilles on:

• Criminal record certificate (ACRO Police Certificate preferred)
• Birth certificate
• Marriage certificate (if applicable, for dependent family members)
• Divorce certificate (if applicable)
• Educational certificates (for some employment and professional visa types)
• Power of Attorney documents (if someone is acting on your behalf in Argentina)

For property or legal matters in Argentina:

• Power of Attorney
• Company documents (if you're doing business)
• Sworn statements or affidavits signed before a UK notary

A useful rule of thumb: if the document is going in front of an Argentine government official, lawyer, escribano, or judge, it needs an apostille. If it's only for your own records, it doesn't.

How to Get an FCDO Apostille

By post (most common)

Send the original document to the FCDO Legalisation Office in Milton Keynes. Include a covering letter, pay £30 per document online via the FCDO legalisation portal, and include a prepaid return envelope (Special Delivery is strongly recommended — losing an original certificate mid-post is a nightmare you don't want). Current turnaround: 2 working days once received, though backlogs can push that out.

In person (same-day)

Walk-in service is available at the FCDO's Premium Service office at Clive House, 70 Petty France, London SW1H 9EX. You must book an appointment online in advance. Same-day service costs £75 per document — more than double the postal rate — but you walk out with the apostilled document in hand, which matters if you're up against a deadline.

Via a document legalisation agency

Several agencies (Simply Docs, UK Apostille Service, Vital Consular, The Apostille Service) will handle the whole process: courier to FCDO, payment, return courier, sometimes international courier to Argentina. Costs around £80–150 per document all-in, depending on speed and whether international shipping is included.

When it's worth paying an agency: you're doing five or more documents at once, you're not based in London and can't easily do walk-in, you're abroad and can't handle UK post reliably, or you've already had a document lost or rejected and can't face doing it again yourself.

When it's not worth it: you're doing one or two documents, you live in Greater London, and you have time to walk into Clive House yourself.

Timeline Strategy — Don't Apostille Too Early

Apostilles have a shelf life. Migraciones Argentina and most other Argentine authorities treat documents as "current" for 12 months from the date of issue (or date of apostille, depending on the document). If you apostille your birth certificate 18 months before you actually file your residency application, you'll likely have to redo it.

But don't leave it too late either. The realistic end-to-end timeline is 8–10 weeks from the day you decide to start:

• Week 1–4: Sourcing the original document. ACRO police certificates take 2 weeks minimum by standard post, 10 working days by premium. GRO certified copies of birth/marriage certificates take 4 working days standard, 1 working day priority. If you need a fresh document, budget from this week.
• Week 4–6: Apostille at FCDO. By post is 2 working days plus post each way. Same-day walk-in is instant if you can get an appointment.
• Week 6–7: International shipping to Argentina. DHL, FedEx, or TNT with tracking. Do not use standard Royal Mail international — packages go missing.
• Week 7–9: Certified Spanish translation in Argentina. A traductor público matriculado needs 3–7 working days for standard documents, longer for anything complex.
• Week 9–10: Legalisation of the translator's signature at the Colegio de Traductores Públicos (an extra stamp that some procedures require). 1–2 working days.

The trap people fall into: they apostille in month one, wait until month eight to file, and discover the 12-month clock started ticking from the document's issue date, not the apostille date. Confirm which date applies to your specific procedure before you start.

Document-Specific Quirks

Criminal record certificates. Migraciones strongly prefers the ACRO Police Certificate (£49, 10 working days) over the basic DBS (£23) or enhanced DBS. The ACRO certificate covers your full UK criminal record nationally, including filtered entries. A basic DBS only covers unspent convictions and can be rejected. For residency applications, always go ACRO.

Birth and marriage certificates. Order certified copies directly from the General Register Office (GRO). Short-form certificates won't work — you need the long-form (full entry) version, which is £11 standard or £35 priority. If you already have an older certificate at home, check the date: if it's more than a year or two old, some procedures will reject it and require a fresh copy.

Divorce certificates. Needed if you're remarrying in Argentina, applying for residency as a divorced person, or bringing dependents. Get a decree absolute copy from HMCTS — photocopies of your original won't be accepted.

Educational certificates. For professional visas, your degree certificate often needs apostille. Universities will issue certified copies directly; these can then be apostilled. Self-printed PDFs cannot.

Power of Attorney. If you're granting someone in Argentina the power to act on your behalf (for property, banking, or legal matters), the POA has to be signed before a UK notary public first, then apostilled. Budget £150–250 for the notary, plus the £30 apostille.

Common Mistakes

Sending photocopies. FCDO apostilles must go on original documents or certified copies from the issuing authority. A photocopy you made at home, even a very good one, won't be apostilled — it'll come back rejected.

Ordering the wrong type. Short-form birth certificates, basic DBS checks, and university transcript photocopies are the three most common rejections. When in doubt, order the most complete version.

Not allowing enough time. The most common reason Argentine residency applications get delayed is apostille documents arriving late or needing to be redone. Starting 6–8 weeks before you "need" them is the minimum; 10 weeks is safer.

Forgetting the translation step. Once your documents are apostilled, Argentine authorities also require certified Spanish translation. This is done in Argentina by a traductor público matriculado (registered public translator), not in the UK. A UK-based Spanish translator's work won't be accepted.

Shipping without tracking. Lost documents are common enough that you should never ship apostilled originals without international tracking and signature on delivery. The replacement process — re-order, re-apostille, re-ship — easily adds 6 weeks.

Apostilling the wrong copy. If you have several copies of a certificate, make sure you apostille a certified original from the GRO, not a solicitor's certified copy. Argentine authorities specifically want the government-issued document with a government-issued apostille stacked on top.

Typical Costs for a Residency Application

Add international courier shipping (£35–60) and, if you use a legalisation agency, another £50–80 per document. A realistic total for a single-person residency document bundle, end-to-end, is £280–350. For a couple with two children, closer to £800 — mostly because you multiply everything by four.

When Things Go Wrong

If your apostille is rejected by an Argentine authority, the most common causes are:

1. Document is over 12 months old. Order a fresh one, apostille it, translate it.

2. Wrong document type (basic DBS instead of ACRO, short-form instead of long-form). Order the correct version.

3. Translation isn't from a registered Argentine translator. Redo with a traductor público matriculado.

4. Translator's signature isn't legalised at the Colegio. Some procedures require this extra stamp; ask your lawyer or gestor before you start.

Don't assume a rejection means you've done something stupid — Migraciones rules shift, and what was accepted last year may not be this year. If you're unsure, pay a qualified immigration lawyer to review your document bundle before you file. It's cheaper than redoing the whole process.