Frozen embryos can travel from the UK to a Greek clinic, and thousands do. The material is hand-carried in the aircraft cabin at −196°C, in a dry shipper holding temperature for up to 21 days, so a delayed connection is an inconvenience rather than a clinical problem. Brexit changed the paperwork rather than the possibility. Your UK clinic now has an authorisation step to complete before anything leaves, and that is what the lead time is really for.
This guide is informational and educational only, and is not legal or medical advice. Requirements change and clinic policies differ, so confirm the details for your own transfer with your clinic and the receiving clinic in Greece.
The Greece Route
Greece has been a familiar destination for UK patients pursuing fertility treatment abroad for years, and moving frozen embryos there follows a route we know well. The flight is short and the receiving clinics are used to working with international patients, but the paperwork side of the journey still needs proper planning. This guide sets out what that involves.
What Changed After Brexit
Before the UK left the EU, moving reproductive tissue between the UK and an EU country like Greece could sit within EU tissue-and-cells frameworks. That is no longer the case. A transfer from the UK to Greece is now handled as an international export, which means it goes through the same HFEA-governed export process required for a transfer to any non-EU country. Clinics typically require this to be arranged well in advance, so it is worth building it into your planning early rather than assuming the old EU-era process still applies.
Before your UK clinic will even apply for the export licence, they need to check your original storage consent forms. If those consents are out of date, incorrectly signed, or missing, the clinic is legally required to refuse to release the tissue. It is worth asking your clinic to verify your consents before the export process is launched, so this doesn't become the thing that holds up your timeline.
According to general regulatory frameworks, most transfers of this kind go through what's known as the General Direction route — the standard, more straightforward path, available once your clinic has confirmed the receiving clinic meets the required safety and accreditation standards and your consent is in place. A smaller number of cases need individual permission through a slower Special Direction route instead. Either way, it's the clinic-to-clinic agreement behind the licence that takes the time, not a form completed by one side alone.
The Documents You Need
Your UK clinic applies for an export licence through the HFEA, and that licence names the courier carrying your embryos. The receiving clinic in Greece provides an agreement confirming it will accept the material. No X-ray letters are prepared for security at both airports, so the tank is inspected by hand rather than scanned, and a customs release letter is arranged for arrival in Greece.
We coordinate this pack alongside both clinics, so you are not the one chasing signatures between two countries. If your route includes a stopover, each transit point is addressed in the documentation as well.
The cryogenic tank travels as cabin baggage, which requires written approval from the airline in advance. This is arranged directly with the carrier's cargo or dangerous goods division, not through general customer service, and we handle it as part of the booking. Transfers to Greece typically run on a direct scheduled flight from the UK, such as British Airways.
What Happens If the Tank Is Checked at Security
The no X-ray letters mean the tank is never scanned, at either airport. A security officer checks it by hand instead, against the documentation that names it. The tank is sealed at the sending clinic before the courier leaves, and that seal is tamper-evident, so anyone checking it along the way can see immediately whether it has been touched.
The seal stays in place until the receiving clinic in Greece takes delivery, where the embryologist checks it against the paperwork before opening the tank. That chain of custody, not just the courier's word, is what confirms nothing has changed along the way.
The Journey, Step by Step
- A qualified courier collects your embryos from the sending clinic in a cryogenic dry shipper holding minus 196 degrees. The embryologist verifies them against your records before loading.
- At the airport, the courier presents the prepared documentation so the tank is inspected by hand rather than passed through an X-ray scanner.
- The courier carries the tank in the aircraft cabin for the whole flight, never in cargo, staying with it through any connection.
- On arrival, the receiving clinic in Greece clears the tank using the pre-arranged customs documentation.
- The Greek clinic's embryologist verifies the embryos and the vessel before they go into storage. You are kept updated at each stage.
How Long It Takes
Plan for several weeks. The flight itself takes a few hours, but the export licence and the Greek clinic's own import paperwork take time to assemble properly. Beginning early, before your treatment dates are fixed, gives the documentation room to be done without rushing.
Frequently Asked Questions
Can frozen embryos be transported to Greece from the UK after Brexit?
Yes, but as an international export rather than an intra-EU move: HFEA export authorisation naming the courier, an import agreement from the Greek clinic, and airline approval for the tank as cabin baggage.
How are embryos kept safe on the journey?
They travel in a cryogenic dry shipper holding minus 196 degrees for far longer than the flight takes, carried in the cabin by a qualified courier who stays with it throughout. The receiving clinic verifies them on arrival.
Which airlines are used for transfers to Greece?
Typically British Airways or other scheduled carriers flying direct from the UK. Airline approval for the tank as cabin baggage is obtained directly from the carrier in advance.
How long should I allow?
Several weeks. The flight is quick, but the export licence and the Greek clinic's paperwork set the timeline. Start before your treatment dates are fixed.
What's the difference between the General Direction and Special Direction routes?
According to general regulatory frameworks, General Direction is the standard, faster path once your clinic and the receiving clinic meet the required conditions. Special Direction is a slower, case-by-case route used when circumstances don't fit the standard criteria. Your clinic will confirm which applies to you.
What happens if the tank is checked at security or customs?
It's inspected by hand, not scanned. The seal placed at the sending clinic stays intact and is only broken by the receiving clinic's embryologist once it arrives in Greece.
What if my flight is delayed or I miss a connection?
The tank's validated hold time is up to 21 days, far beyond the few hours a direct flight to Greece takes, let alone a short delay. The courier is rebooked onto the next available option and the tank stays sealed throughout.
Embryo Links handles the export licence, customs release and airline approval for transfers to Greece, with a qualified courier carrying the tank in the cabin throughout. Talk to us about your route.
Last reviewed: 15 September 2026.