UK apostilles for Argentina: which documents need one?

A UK certificate destined for Argentine immigration may need two stages before it is usable: an apostille from the UK's FCDO Legalisation Office, followed by a sworn translation in Argentina. The FCDO, formerly the FCO, authenticates the signature or seal on the UK document. For residence, the paperwork commonly includes an ACRO police certificate for an adult, with birth or marriage records where a family relationship needs proof. The exact set comes from the receiving office and the residence category.

A paper FCDO apostille costs £45 per document through the standard service in September 2026, excluding postage. Ordering certificates, processing and international delivery can take considerably longer than attaching the apostille itself, so the receiving office's document list is the useful starting point.

Which UK originals belong in the file

Under the 1961 Hague Apostille Convention, an FCDO apostille authenticates a UK public document for Argentina without a second Argentine consular legalisation. It verifies the signature, seal or stamp, rather than the truth or current relevance of the contents. Migraciones, Argentina's national immigration authority, determines the records for a residence application; a school or professional regulator may request a different set.

An official copy from the General Register Office (GRO) for England and Wales, National Records of Scotland or the General Register Office for Northern Ireland (GRONI) counts as an original certificate for legalisation. A scan or ordinary photocopy lacks the registrar's original signature for the FCDO to authenticate. The passport itself is shown to the relevant office, rather than apostilled; a solo applicant need not order family certificates unless the category requires them.

For school admissions, the particular school can identify which overseas records it needs. The school-starting guide covers the first weeks once a place is arranged. For residence, the relevant Migraciones category, rather than a general expat checklist, determines the documents to assemble.

How the UK and Argentine stages fit together

Civil records come from the relevant UK register service. An immigration police certificate is ordered directly from ACRO; a basic DBS check should not be assumed to meet the same requirement. In September 2026, ACRO listed its standard police certificate at £65 with a processing target of 20 working days; its premium option costs more. The certificate also has to be recent enough for the intended filing date. If a person has lived in other countries, the category's police-record requirements may extend beyond the UK. A record issued by another country normally receives its apostille from that country, not the FCDO.

Private paperwork needs more attention before it enters the FCDO process. A bank printout or pension-provider letter is not automatically an apostillable public record. If the receiving office requires it in legalised form, a UK solicitor or notary may have to certify or witness it in a form the FCDO accepts, for a separate fee. Where ordinary income evidence is accepted, that professional stage may be unnecessary.

GOV.UK's ‘Get your document legalised’ service takes the application and payment, then gives instructions for posting paper originals. In September 2026 the standard paper service was £45 per document plus return postage, with a published target of up to 15 working days after receipt, before postal transit. The FCDO also offered a £35 electronic apostille for eligible documents. Its usefulness depends on whether the Argentine recipient accepts that electronic form.

The completed apostille stays attached to its document. Names and spellings can then be compared with passports and civil records: a surname difference may require a linking document. Keeping the originals in hand luggage and scans as backups helps protect the finished sets on the journey. Once in Argentina, a traductor público (sworn public translator) translates the English record and the apostille together. In Buenos Aires City, the Colegio de Traductores Públicos de la Ciudad de Buenos Aires legalises the translator's signature; elsewhere the college with jurisdiction handles that stage. The receiving office sees the document, attached apostille and legalised translation together.

Across certificate ordering, ACRO's processing, FCDO handling, post in both directions and translation, roughly 6–10 weeks is a planning allowance, not an official guarantee. Translation may take days, while transit or a returned application can cost weeks. For appointments after arrival, the Buenos Aires bureaucracy guide and first-week checklist cover the surrounding tasks.

A family file and its bill

Suppose a British couple and their eight-year-old need two adult ACRO certificates, a marriage certificate showing the relationship and the child's birth certificate showing parentage for a family residence application. That is four UK documents for apostilling, on the assumption that their category's checklist requests them. The civil records can be ordered first, with the ACRO certificates timed closer to filing so they remain recent. Any additional school academic records depend on what the chosen school asks to see.

At September 2026 published standard prices, two ACRO certificates cost 2 × £65 = £130. Four paper FCDO apostilles add 4 × £45 = £180, making £310 before civil-certificate fees, postage, professional certification if needed and Argentine translation. ACRO's 20-working-day target followed by the FCDO's up-to-15-working-day target already amounts to about seven working weeks if done sequentially, even before postal travel.

When the documents are already overseas

The British Embassy in Buenos Aires cannot apostille UK documents. A person already in Argentina can apply to the FCDO online, then arrange for the eligible original to reach the UK service and return to Argentina, allowing for trackable delivery and courier costs. If the certificate is missing, the relevant register service or ACRO can supply an official replacement. A detached or photocopied apostille, or a translation tied to a superseded certificate, can mean repeating the process.

An Argentine-issued birth or marriage certificate bound for Britain follows the reverse route: its apostille comes through Argentina's Cancillería (Foreign Ministry), not the FCDO. For a return move, the return-to-UK guide covers the wider practicalities; the UK receiving office decides what document and translation it requires. An apostille authenticates a document. It does not confer residence or extend a British visitor's 90-day visa-free stay.