SHORT ANSWER
Partly. No US or UK rule says you must hire a pet shipper, and you can handle your pet's vet work and paperwork yourself. But dogs and cats flying into Great Britain must travel as cargo on an approved route, and the Heathrow Animal Reception Centre says you still need to appoint a UK customs agent whether or not you use a shipper. Some airlines go further: American Airlines Cargo states that a pet shipper or broker is a must for dogs and cats going to the UK. So the paperwork can be DIY, but the flight and the arrival almost never are.
The UK is not the hardest country to move a pet into. Dogs and cats coming from the United States don't need a rabies titer test, there's no import permit to apply for, and there's no quarantine for pets that meet the rules. That's exactly why so many families ask me whether they can skip a pet shipper and handle the move on their own.
Legally, nothing stops you from preparing your own pet. GOV.UK's guidance on bringing a pet to Great Britain lays out what every dog and cat needs, and the USDA APHIS page for pet travel to the UK explains how your accredited vet issues and submits the health certificate. You don't need a license or a broker to book a vet appointment or sign the owner declaration.
The catch is everything that happens after the vet visit. When I put this exact question to Emma Day, Branch Manager at our UK sister company PetAir UK, on a recent Pet Travel Insider episode, she didn't hesitate:
"You know, it's really very complicated and complex to try and do it yourself. And I think this can be said the same all over the world. It's much, much better for your pets. It's much more straightforward for you all just to get somebody to take care of all the technicalities that are involved."
GOV.UK states that pets have to travel as cargo on a plane unless you're flying on a chartered private plane or traveling with a guide or assistance dog. That single rule takes away the simplest DIY option many US owners picture, which is carrying a small dog or cat in the cabin.
Your pet also has to arrive on an approved route. The UK government publishes a list of approved airlines and the airports each one can use for pets, most recently updated on 23 October 2026 at the time of writing. GOV.UK warns that approved routes can change or may only operate at certain times of the year, so check the current list before you book anything.
Heathrow's own guidance is just as direct. According to the City of London, which runs the Heathrow Animal Reception Centre, pets traveling to Heathrow "must be booked as manifest cargo in the hold of the plane." Manifest cargo is booked through an airline's cargo division, not on your passenger ticket, and each cargo division sets its own acceptance rules. American Airlines Cargo, for example, tells customers sending a dog or cat to the UK that they'll "need to secure a pet shipper or broker to handle the process in the U.K."
This is the step that ends most DIY plans. GOV.UK says that when you arrive in Great Britain from outside the EU, "You can only collect your pet after it's been taken through customs," and that you can usually pay an agent, travel company or airline to do this for you. If you can't arrange that, GOV.UK tells you to contact customs at your arrival point before you travel or email HMRC's National Clearance Hub.
At Heathrow, most pets are handled at HARC. The centre recommends using an IPATA pet shipper and is clear that "regardless of whether you use an IPATA shipper or make your own arrangements, you will still need to appoint a UK customs agent."
After your pet lands, HARC staff check the paperwork for non-commercial pets, then contact your nominated UK agent to arrange customs clearance. HARC says pets are ready to collect within 2 to 4 hours of arrival on average. At pickup you'll need photo ID, the air waybill, and a lead and collar for your dog.
There's a tax piece too. HMRC's transfer of residence guidance confirms that pets brought in for non-commercial purposes qualify for transfer of residence relief from customs charges, but that relief still has to be claimed as part of the customs process.
The preparation side is where a DIY owner has the most control. These are the five steps US dogs and cats need, in order, based on GOV.UK and USDA APHIS guidance:
If you're flying into Heathrow, APHIS also notes that HARC's paperwork pre-check should be done before USDA endorsement. For a deeper look at each of these steps, our complete guide to pet travel to the UK from the USA walks through them for both dogs and cats.
Most owners who struggle don't get the vet work wrong. They run into the parts of the move that sit outside the vet's office:
Getting any of it wrong has real consequences. GOV.UK states that a pet that doesn't meet the rules may be put into quarantine for up to 4 months or sent back to the country it traveled from, and the owner is responsible for any fees. Emma made the same point when we spoke:
"There are some places, depending on how or where you've traveled, where it just isn't possible to do it yourself anyway. And it would be awful to get into a situation where, due to the nature of your arrival, it wasn't even possible, and then you're in a really tricky situation."
We've covered the broader risks in more detail in What Are the Risks of Shipping a Pet Without a Professional Pet Shipper?, but for the UK specifically, routing and customs are the two that catch people.
Owners who have done it themselves tend to confirm the customs point. In a community guide on moving pets by air directly from the US to the UK in r/AmericanExpatsUK, one commenter added: "Another add: at least with dogs you also need to book a customs agent on the UK side when flying into Heathrow." They went on to say the agent they hired handled it without issues.
That's a fair summary of how most self-managed UK moves end up working. The owner handles the vet appointments, and a professional still handles the arrival.
Here's how I put it to families on our consultation calls: "The vet appointments are the easy part of a UK move. The hard part is what you can't see from the US: a cargo booking on an approved route, a customs agent waiting at Heathrow, and every date on that certificate matching the flight. When one of those slips, your pet is the one sitting in a kennel while it gets sorted out."
A shipper earns its fee fastest when:
At Starwood, we coordinate UK arrivals with our sister company PetAir UK, so the US side and the UK side are working from the same plan. If you'd like us to look at your dates and your pet's paperwork, request a free quote and we'll map out the full timeline with you.