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FCDO Legalisation Office in Milton Keynes: address, contact and tracking

Version of October 22, 2026

Where the FCDO Legalisation Office in Milton Keynes is, how to get the postal address, what legalisation costs and how to track your apostille application.

Apostilla UK — a private company, not a government body.

We are not affiliated with FCDO Legalisation Office. The official document is issued free of charge (see gov.uk) directly by the government body: www.gov.uk/get-document-legalised. Our service is a paid support (preparation, apostille, translation, delivery), separate from the official fee.

Where is the FCDO Legalisation Office?

The FCDO Legalisation Office is in Milton Keynes, Buckinghamshire. Plenty of people still search for a “legalisation office London” address, because the service used to be associated with the capital; today the main office for paper documents is in Milton Keynes, and the exact postal address is not published for casual visits. You receive it by email only after you complete the online application on GOV.UK, together with your submission reference.

That order matters. The FCDO Legalisation Office does not accept documents handed in without a completed application, so the sequence is always the same: apply and pay online first, then post your documents or bring them in at the time you are given. If you are at the very start and want the full picture, the guide to FCDO legalisation explains what an apostille is and when you need one.

What the Legalisation Office actually does

The Legalisation Office checks that the signature, seal or stamp on a UK public document is genuine and then attaches the Apostille Certificate to it. The office sits within the Foreign, Commonwealth and Development Office (FCDO); before the department was renamed, the same job was done under the Foreign and Commonwealth Office (FCO), which is why older guides still talk about an “FCO apostille”.

In practice the postroom sees a familiar mix: General Register Office birth, marriage and death certificates, an ACRO Police Certificate for visas or work abroad, Companies House filings for business use, court stamps and documents signed by a UK notary. If the signature or seal cannot be matched, the document is rejected, so it pays to check eligibility before you send anything.

We help with documents and timelines

How long it takes: post, drop-off or e-Apostille

There are three routes, and the speed gap between them is wide.

All these services may take longer, for example if there’s a signature that needs to be verified — the Legalisation Office will let you know if this happens. The postal route is the default for most applicants, but it carries the full weight of the mail system both ways. Dropping documents at the FCDO Legalisation Office in Milton Keynes removes that wait, and the e-Apostille goes further still: for eligible documents the whole thing happens online, no envelope required. The page on the e-Apostille explains which documents qualify and which still need paper.

What the fee covers

The fee is charged per Apostille Certificate, and the current amount is published on GOV.UK, so check it on the day you apply rather than relying on an older article. The standard paper-based service costs £45 per document, plus courier or postage costs, and the e-Apostille costs £35. The fee covers the examination of the signature, seal or stamp and the certificate itself; return postage is arranged as part of the application. If your document cannot be legalised, you will not be refunded.

We help with documents and timelines

How to apply: online, by post, in person or through an agency

Everything starts with the online application on GOV.UK. You list each document, pay, and receive a reference plus the submission address by email. From there you have choices:

  • By post: send your documents with the reference quoted in a cover letter. No printer? Write the reference, your name, your return address and a list of enclosed documents by hand; payment has already been made online, so nothing extra needs to go in the envelope.

  • In person: book a drop-off slot and bring the documents with your reference.

  • Through an agency: commercial legalisation agents can submit and collect documents on your behalf. This makes sense if you cannot travel or are working to a tight deadline; you instruct them, they deal with the FCDO Legalisation Office queue, and you pay for the convenience.

Whichever route you take, keep a copy of everything you send.

Contacts: email, phone and order status

For questions about an application, contact the Legalisation Office by phone on +44 20 4623 3100. Quote your reference and keep the message short: which documents, which country, what you need to know.

Once documents come back, anyone can verify an apostille to confirm the certificate is genuine, which is often the first thing a foreign authority will do. To verify a paper or electronic apostille you’ll need the date the apostille was issued and the apostille number.

We help with documents and timelines

What the office will not legalise

Some documents are rejected no matter how carefully you pack them. Photocopies that have not been notarised, laminated certificates and documents issued by authorities outside the UK all fail, because the Legalisation Office can only match signatures and seals it holds records for. Foreign documents need to be legalised in the country that issued them.

There is also a country question. The Apostille Certificate works only between members of the Hague Convention; for destinations outside it, UK documents need embassy attestation after legalisation, sometimes with a translation on top. Check the destination country’s rules before you pay for anything.

Worth remembering: opening hours and cut-off times are always set locally, so confirm them with the issuing office before you plan a trip.

A worked example: no printer, deadline next week

Situation: an employer abroad wants an ACRO Police Certificate legalised within days, and the applicant has no printer at home. Steps: complete the online application on a phone, pay by card and screenshot the reference; write the reference, name and return address on a handwritten cover letter; post the certificate the next morning, or book a drop-off at the FCDO Legalisation Office in Milton Keynes if the deadline is tight. Result: the Apostille Certificate is attached and the document returns by post, or is collected from the Milton Keynes office.

This page is for general information only and is not legal advice. Apostilles for UK public documents are issued exclusively by the Foreign, Commonwealth & Development Office (FCDO) Legalisation Office; this site is not affiliated with any government body. Please consult a qualified professional before making decisions.

FAQ

In Milton Keynes, Buckinghamshire. The full postal address is sent by email only after you complete the online application on GOV.UK, so there is no public walk-in address to copy down in advance.

The main office for paper documents is in Milton Keynes. Its postal address is released only with your application confirmation, and there is no separate public counter address to visit without a booking.

Drop-off at the office is the quickest paper route and is usually turned around far faster than the postal service. The exact current turnaround is confirmed when you book your slot.

Cut-off times are confirmed with your booking. As a rule, documents must be handed in before the end of the working day stated in your confirmation email to be processed for the next working day.

The fee is charged per Apostille Certificate and the current amount is published on GOV.UK. Check it on the day you apply, and remember that the e-Apostille and agency services are priced separately.

The fee covers checking the signature, seal or stamp on your document and issuing the Apostille Certificate itself. Return postage is arranged as part of the application; agency service fees, if you use one, are extra.

Email legalisation@fcdo.gov.uk with your application reference in the subject line and ask for an update. Keep the message brief and list the documents you submitted.

Contact CMK Legalisation directly, agree their service fee, and hand over or post your documents together with your FCDO application reference. They submit and collect on your behalf, which suits applicants who cannot reach Milton Keynes.

Step by step

  • 1Check document eligibilityConfirm your document is an original or a properly notarised copy that FCDO Services can match to its records.10 minutesFree

  • 2Apply online on GOV.UKList each document, pay the current fee and save the reference number from your confirmation email.15 minutesPer document, see GOV.UK

  • 3Prepare a cover letterWrite your reference, full name, return address and a list of enclosed documents; handwritten is fine if you have no printer.10 minutesFree

  • 4Confirm fee and turnaroundCheck the fee per Apostille Certificate and current processing times on GOV.UK before you send anything.5 minutesFree

  • 5Send with trackingUse a tracked postal service or a booked drop-off slot, and keep the receipt until your documents return.VariesPostage at cost

How the process works

  • 1Complete the online applicationList every document on GOV.UK, pay the fee and note the reference number you receive.

  • 2Receive the submission addressThe postal address for the Legalisation Office arrives by email together with your reference and instructions.

  • 3Send or drop off your documentsPost them with a cover letter quoting your reference, or attend the Milton Keynes office at your booked time.

  • 4Receive your legalised documentsDocuments come back by post or are collected, each carrying the Apostille Certificate.

Which UK documents can be apostilled: certificates, degrees, company and court papers, e-Apostille rules, fees, FCDO rejections and embassy attestation explained.

Which countries accept a UK apostille, which require embassy attestation, and country-by-country guides for UK documents used abroad.

Apostille meaning explained for UK documents: what the FCDO certificate looks like, which documents qualify, e-Apostille, costs, timing and when embassy legalisation.

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