Can US Green Card holders travel to the UK in 2026? Visa and ETA rules explained

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A US Green Card by itself does not determine whether someone can travel to the United Kingdom without a visa. UK entry rules are based primarily on the traveller’s nationality and passport, not on United States lawful permanent resident status.

In 2026, a United States lawful permanent resident may fall into one of three categories:

• US citizen with a US passport: usually does not need a visitor visa for short UK visits, but must have a UK Electronic Travel Authorisation, known as an ETA, unless an exemption applies.
• Green Card holder with a passport from a visa-exempt country usually needs an ETA for short UK visits, not a visitor visa.
• Green Card holder with a passport from a visa-national country usually must apply for a UK visa before travel. A US Green Card does not replace a UK visa.

The key point is simple: the UK does not treat US permanent residence the same as US citizenship. A Green Card may help establish US residence for practical purposes, but it does not automatically confer visa-free entry to the UK.

Why US nationality and Green Card status are different

Many travellers assume that holding a US Green Card allows them to travel internationally under rules similar to those that apply to US citizens. That assumption is incorrect for UK immigration purposes.

A Green Card confirms that the holder is a lawful permanent resident of the United States. It does not change the holder’s nationality. For UK travel, the relevant question is: what passport will the traveller use to enter the UK?

For example:

• A US citizen who also has a Green Card issue is not a typical Green Card traveller; that person travels as a US citizen using a US passport.
• An Indian citizen who is a US Green Card holder remains an Indian national for UK visa purposes.
• A Brazilian citizen who is a US Green Card holder remains a Brazilian national for UK ETA or visa purposes.
• A Canadian citizen who is a US Green Card holder remains a Canadian national for UK ETA or visa purposes.

Accordingly, the first step is always to check which country’s passport the traveller will use for the UK trip.

What is the UK ETA?

The UK Electronic Travel Authorisation is a digital travel permission for certain visitors who do not need a UK visa for short stays. It is not a visa, and it does not guarantee admission at the border. It is permission to travel to the UK granted in advance, however, the traveller remains subject to examination by UK Border Force.

An ETA is generally used for short visits of up to six months, including tourism, visiting family or friends, certain business activities, short courses of study and some permitted paid engagements where the rules allow them. It is also relevant for some transit passengers on an onward journey via the UK.

As of 2026, the ETA system applies broadly to visa-exempt visitors. The UK government has now moved to enforcement of a “no permission, no travel” model, meaning carriers may refuse to board a traveller without an ETA or a valid UK immigration permission.

Who needs an ETA in 2026?

Generally, a UK ETA is needed if all of the following are true:

• The traveller is not a British or Irish citizen.
• The traveller does not already have a UK visa or other UK immigration permission.
• The traveller is using a passport that is eligible for ETA travel.
• The traveller is coming to the UK for a permitted short-stay purpose, such as tourism, visiting family, qualifying business activities or transit, where required.

For US citizens, the practical rule is straightforward: US passport holders generally need an ETA for short visits to the UK in 2026.

For US Green Card holders who are not US citizens, the answer depends on nationality. If the passport is from an ETA-eligible country, the traveller will usually need an ETA. If the passport is from a country whose nationals require a UK visa, the traveller must apply for the appropriate UK visa instead.

Who needs a UK visa?

A US Green Card holder usually needs a UK visa if their nationality is not ETA-eligible or if the purpose of their travel does not fall under the ETA or standard visitor rules.

Common situations requiring a visa include:

• Passport from a visa-national country: the traveller must obtain a UK visa before travel, even if they live permanently in the United States.
• Work in the UK: most employment, productive work or long-term assignment activity requires a work visa or other specific permission.
• Long-term study: study beyond the visitor rules generally requires a student visa or other appropriate route.
• Long stays: an ETA is not a route for residence and does not permit stays beyond the applicable visitor period.
• Marriage or civil partnership plans: travellers coming to marry or form a civil partnership in the UK may need a Marriage Visitor visa, unless they have another qualifying immigration status.

The safest approach would be to establish both the traveller’s passport nationality and the purpose of travel before selecting the application route.

How to apply for a UK ETA

For travellers who are ETA-eligible, the application process is intended to be straightforward. The applicant typically needs:

• The passport they will use for travel.
• A valid email address.
• A payment method, such as a credit card, debit card, Apple Pay or Google Pay.
• A digital photo or live image, depending on whether the application is completed online or through the UK ETA app.

The ETA is digitally linked to the passport used for the application. If the traveller obtains a new passport, they should expect to apply for a new ETA. An ETA normally lasts for two years or until the passport expires, whichever occurs first, and may be used for multiple trips during its validity period.

Although many ETA decisions are issued quickly, travellers should apply well before departure and should not travel until their application is approved.

How to apply for a UK visitor visa

If the traveller is not ETA-eligible or needs a visa because of the purpose of their travel, the traveller should apply for the appropriate UK visa before departure. For a standard visitor visa, the applicant should expect to provide information concerning:

• Identity and passport details.
• US immigration status (if any), including lawful permanent residence where relevant.
• Purpose and duration of the UK trip.
• Financial ability to support the visit.
• Accommodation and travel plans.
• Ties to the United States or another country of residence.
• Prior immigration history and travel history.

A US Green Card can be useful as evidence of residence in the United States, but it does not eliminate the need to satisfy the UK visa requirements.

Frequently asked questions

Does a US Green Card let me enter the UK without a visa?

No. A US Green Card does not by itself provide visa-free entry to the UK. The UK looks primarily at your passport nationality and your reason for travel.

If I have a US Green Card and a passport from a country that needs a UK visa, can I apply for an ETA instead?

Not as a rule. ETA eligibility depends on nationality, not US permanent residence. If your passport nationality is not ETA-eligible, you should expect to apply for a UK visa.

Do US citizens need a UK ETA in 2026?

Yes, US citizens traveling for short visits generally need a UK ETA in 2026, unless they already hold UK immigration permission or qualify for another exemption.

Is an ETA the same as a visa?

No. An ETA is digital permission to travel for certain visa-exempt visitors. It is not a visa, it does not guarantee entry, and it does not permit work or long-term residence.

How long can I stay in the UK with an ETA?

An ETA is typically used for visits of up to six months, provided the holder observes the UK visitor rules. It is not a route to live in the UK.

Can I work in the UK with an ETA?

Not in the ordinary employment sense. Some limited business visitor activities may be allowed, but taking employment, filling a UK role or performing productive work will usually require a work visa or other permission.

Do children need an ETA?

Yes. Each traveller who needs an ETA must have one, including babies and children.

What if my ETA is refused?

If an ETA is refused, the traveller cannot use the ETA route for that trip and may need to apply for a UK visa, depending on the reason for travel and the refusal grounds.

Do I need an ETA if I already have a UK visa?

No. Travellers who already have a valid UK visa or permission to live, work or study in the UK generally do not need an ETA.

Should I bring my Green Card with me when traveling to the UK?

Yes. A Green Card holder should carry the physical Green Card because it is important for re-entry to the United States. It may also help document residence in the United States, although it does not replace any UK visa or ETA requirement.

Conclusion

In 2026, US Green Card holders should not assume they can travel to the UK under the same rules as US citizens. The controlling factor is the passport nationality used for travel. US citizens generally need a UK ETA for short visits. Green Card holders with ETA-eligible passports generally need an ETA. Green Card holders with visa-required passports generally need a UK visa.

Before booking travel, you should always check the traveller’s nationality, the purpose of their UK trip and the current UK ETA or visa rules. This short exercise can prevent denied boarding, refused entry or avoidable disruption at the border.

How Gherson can assist

Gherson’s Immigration Team are highly experienced in advising on UK visa matters. If you have any questions arising from this blog, please do not hesitate to us for advice, send us an e-mail or, alternatively, follow us on X, Facebook, Instagram, or LinkedIn to stay-up-to-date.

This article was first published in 2023 and has been updated in June 2026. 

The information in this blog is for general information purposes only and does not purport to be comprehensive or to provide legal advice. Whilst every effort is made to ensure the information and law is current as of the date of publication it should be stressed that, due to the passage of time, this does not necessarily reflect the present legal position. Gherson accepts no responsibility for loss which may arise from accessing or reliance on information contained in this blog. For formal advice on the current law please do not hesitate to contact Gherson. Legal advice is only provided pursuant to a written agreement, identified as such, and signed by the client and by or on behalf of Gherson.

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