From online form to wet-signed certificate: how the process actually works
"Wet-signed" is one of those phrases that means nothing until it suddenly matters. It means a document physically signed in ink, not a scan, not a typed signature, not a PDF. Several consulates insist on it, and it's the reason a process that starts online has to end with something in the post.
Before we start: this article is about the paperwork and the process behind visa medical certificates. It is not medical advice, and nothing here should be used to work out whether you personally have or don't have any condition. If you have a question about your own health, speak to your GP or another qualified clinician.
We write from official sources, including published consulate checklists, government guidance and the legislation itself, and we link to them so you can check for yourself. Those sources change, sometimes without notice, so always confirm the current requirements with the authority handling your application before you pay for anything.
Four stages. You complete a short form online, you speak to a GMC registered GP by video, the doctor writes and signs the certificate, and the signed original goes in the post while a PDF copy comes by email.
Then, depending on your destination, there's legalisation and translation. Those are separate steps with their own timescales.
Stage one: the online form
The form isn't the assessment. It's there so the doctor arrives at your appointment already knowing your destination, your visa type and the basics of your history, rather than spending the consultation gathering information you could have typed in advance.
Two things matter more than the rest. Your name must match your passport exactly, because a mismatch between your certificate and your application is a real reason for a consulate to refuse the document. And your destination and visa type decide the wording, which differs between countries.
Stage two: the consultation
A live video appointment with a doctor registered with the General Medical Council. Not a questionnaire someone reviews later.
The doctor takes a proper history: past and current conditions, medication, surgery, hospital admissions, mental health, infectious disease history, vaccinations. They'll ask about the specific areas the certificate covers and follow up on anything that needs clarifying.
This is also your chance to ask. People routinely worry that blood pressure medication or a mental health history will sink their application. For the Spanish certificate in particular, that's usually not what's being asked about at all, and hearing that from a doctor tends to be a relief.
A service that skips this step should give you pause. Some providers issue certificates from a form alone, with a doctor signing off afterwards without ever speaking to you. A doctor is required to make clear the limits of their knowledge when they certify something. A consultation is how they get that knowledge in the first place.
Stage three: the certificate
Written in the wording your destination requires. For Spain that means the exact phrasing the London consulate publishes, referencing the International Health Regulations 2005. A generic "fit to travel" letter is not the same document and gets refused.
It carries the doctor's signature in ink, the practice details, and the doctor's GMC number.
Why it has to be posted
A wet-ink signature can't be emailed. That's the whole point of it: the physical document is evidence that a real person signed it, which is also what makes the FCDO apostille possible.
When your certificate reaches the Legalisation Office, staff compare the signature against specimen signatures they hold on file. That check needs the original. A printed PDF has nothing to verify.
So you get two things: a PDF by email straight away, useful for checking details and for any part of the application that accepts digital copies, and the signed original by post for the consulate.
Stage four: legalisation and translation
This is where the timeline usually goes wrong, because people don't budget for it.
The apostille. For Spain and Greece the certificate needs the FCDO stamp. How long depends on whether the doctor's signature is already held on the FCDO's records. If it isn't, the document has to be certified by a solicitor first, which adds a fee and several days.
The translation. Spain requires a sworn translator accredited by the Spanish Ministry of Foreign Affairs, and it happens after the apostille, not before. A general translation agency won't satisfy it.
Both of these eat into the certificate's validity window, which is why we suggest working backwards from your consulate appointment rather than forwards from today.
What you'll need ready
- Photographic ID, ideally your passport
- Your destination country and visa type
- An honest account of your health, including medication
- The delivery address for the signed original
- Test results, if you're applying to Greece
Questions people ask us
Q Can I just use the PDF?
Often not. Many consulates want the original, and the apostille process needs it. Check what yours accepts before relying on a printout.
Q How long does the consultation take?
Usually around fifteen minutes, longer if your history is complicated or you have questions.
Q What if the doctor can't certify me?
They'll explain why and talk through your options. That has to be possible, or the certificate wouldn't mean anything.
Q Can you post internationally?
Ask before ordering. It's usually possible, but it adds time and the certificate's validity clock is already running.
Q Do I need to be in the UK?
The certificate must be issued in the country you're applying from. If you're applying through a UK consulate, it needs to be a UK doctor.
Q What if there's a mistake on it?
Tell us straight away and we'll correct and reissue it. Check the spelling of your name against your passport the moment it arrives.
Where this information comes from. We write these articles from official sources: the published checklists of the consulate or embassy concerned, UK government guidance, and the text of the legislation itself. Where we have relied on a particular source, we link to it so you can read it yourself.
Those sources change, sometimes without notice, and different consulates sometimes apply the same rules differently. Everything above reflects our understanding on the date shown at the top of this page.
This article covers the process and the paperwork only. It is not medical advice, legal advice or immigration advice, and we are not immigration advisers. For anything concerning your own health, speak to your GP or another qualified clinician. For what your own application requires, confirm directly with the authority handling it before you order anything or book travel.
Related reading
Ready to get started?
Complete the form, speak to a UK GP by video, and have the signed original in the post the same day.
Order your certificate