Should You Avoid Weekend or Bank Holiday Pet Arrivals in the UK?

SHORT ANSWER

You don’t have to avoid weekend or bank holiday arrivals entirely. The Heathrow Animal Reception Centre (HARC) is open 24 hours a day, 365 days a year, and many weekend arrivals go smoothly. The risk is what happens if something on your pet’s paperwork is wrong. On a Saturday, Sunday or bank holiday:

• The vet who issued the documents is usually closed.
• The government Pet Travel helpline is closed.
• Any fix has to go through out-of-hours services that cost more.

Your pet may have to stay at the reception centre until it’s resolved. If the delay pushes past your dog’s tapeworm treatment window, the problem gets bigger. For most families, a weekday arrival (ideally Monday to Thursday) is the safer choice.

Can Pets Arrive at Heathrow on a Weekend or Bank Holiday?

Yes. According to the City of London’s Heathrow Animal Reception Centre page, HARC’s opening times are 24 hours a day, 7 days a week, 365 days per year. HARC is the live animal Border Control Post at Heathrow and checks non-commercial Pet Travel Scheme arrivals for compliance. The centre handles roughly 22,000 dogs and cats a year.

Being able to arrive on a weekend is not the same as being able to fix a problem on a weekend. Several other things have to happen before you collect your pet:

• Customs clearance by a UK agent. Your pet must be cleared through customs by a nominated UK agent. HARC states that airlines and their ground handling agents won’t allow a private importer to clear pet cargo themselves.
• Limited arrival slots. HARC limits the number of pet arrivals it accepts each day. Airline cargo bookings often only open 10 to 14 days before departure.

For these reasons, Starwood Pet Travel requests Monday to Thursday travel dates for UK moves wherever possible, as outlined on our UK booking procedures page.

Why Paperwork Problems Are Harder to Fix Outside UK Business Hours

When your pet lands, HARC staff check the microchip and entry documents against the Pet Travel Scheme rules. HARC’s Pet Travel Scheme guidance groups problems into three categories:

1. Minor administrative errors by the issuing vet. These need no further action.
2. Errors that require HARC to contact the issuing vet for clarification before release. These carry a £99 administrative fee.
3. Serious errors. These could lead to quarantine or re-export to the country of origin. This category includes tapeworm re-treatment and new entry paperwork. Further charges apply.

The second category is where weekends matter most. If your pet arrives on a Saturday and HARC needs clarification from the vet who completed the certificate, that vet may not answer until Monday. US clinics are several hours behind UK time, which adds more waiting.

Official support follows a weekday schedule on both sides of the Atlantic:

• UK: The APHA Pet Travel helpline is open Monday to Friday, 8:30am to 5pm, and closed on bank holidays.
• US: The APHIS Customer Call Center lists hours of Monday to Friday, 8:30am to 5pm Eastern.

US-issued certificates add one more constraint. USDA APHIS states that the Great Britain health certificate needs an original ink endorsement from USDA. A corrected document can’t simply be emailed over on a Sunday afternoon.

Emma Day, Branch Manager at PetAir UK, explains how this plays out on the ground:

“Weekend arrivals are possible. We do them, and they’re often very smooth. But be mindful of the fact that if something isn’t correct, if there is an issue with any of the documents that need to arrive with your pet, the chances of getting that resolved quickly are very small. So it’s likely they’re going to need to stay.”

How the Tapeworm Window and 10-Day Certificate Rule Turn a Delay Into a Bigger Problem

Two strict timing rules make delays more serious for pets entering Great Britain.

Tapeworm treatment for dogs. GOV.UK guidance requires dogs to be treated with praziquantel (or an equivalent) no less than 24 hours and no more than 5 days (120 hours) before entering Great Britain. Dogs coming directly from Finland, Ireland, Northern Ireland, Malta or Norway are exempt.

GOV.UK gives this example: if a dog is treated at 1pm on Monday, it can’t arrive after 1pm on Saturday. If a booking or paperwork problem pushes arrival past that cutoff, the dog may need a new treatment. HARC lists tapeworm re-treatment as a serious, chargeable non-compliance.

The 10-day health certificate window. For pets travelling on a Great Britain pet health certificate, which includes pets from the United States:

• GOV.UK states the pet must enter Great Britain within 10 days of the certificate being issued.
• HARC’s guidance specifies 10 days from the date of endorsement by the competent authority in the country of origin.

A long weekend spent waiting for a fix uses up days you may not have.

What Out-of-Hours Fixes Can Cost You

Standard HARC handling fees, as listed on the City of London’s import page, are:

These fees are usually included in your pet transport agent’s quote.

Paperwork problems add costs on top of those fees. GOV.UK states that pets which don’t meet the rules can be placed in quarantine for up to four months, or refused entry if travelling by sea, and that owners are responsible for any fees or charges.

Emma Day points out that timing adds its own costs:

“Any paperwork rework that needs to be done is likely to be quite expensive, because we’re then looking at paying an out-of-hours response team to be able to fix that for you. So, outside of our control, there are significant additional costs during these times. It’s not to be avoided, but it’s certainly to be mindful of.”

UK Bank Holidays to Plan Around in 2026 and 2027

These are the upcoming bank holidays for England and Wales, taken from the official GOV.UK bank holiday calendar:

Most UK bank holidays fall on a Friday or Monday, so each one effectively creates a three-day closure. The 2026 Christmas period runs four days, from Friday 25 December through Monday 28 December. Easter 2027 does the same, from Good Friday through Easter Monday.

If you’re moving to Scotland or Northern Ireland, check those calendars separately on the same GOV.UK page, because their bank holidays differ.

Are Late-Night Arrivals a Similar Risk?

Late-night arrivals don’t carry the same paperwork risk, but they do affect how quickly you’ll see your pet. HARC reports that, on average, pets are ready to collect within 2 to 4 hours of arrival once compliance checks and customs clearance are complete.

Emma Day says very late arrivals often go better if you don’t rush the collection:

“It generally makes sense to let them settle. After it gets to around midnight, it’s better to let them settle and get organised first thing in the morning.”

At HARC, dogs have access to an outdoor run and cats have access to a litter tray. Each pet has its own kennel with fresh water, food and bedding.

How to Choose the Safest Arrival Day for Your Pet’s UK Move

The safest arrival day leaves time to fix any problem during normal business hours on both sides of the Atlantic. In practice:

• Aim for Monday to Thursday. A paperwork query raised on arrival can then usually be answered by the issuing vet and the authorities the same day or the next working day.
• Avoid the day before a bank holiday weekend. This matters most around Easter and Christmas.
• Time the tapeworm treatment with your arrival date in mind. Keep a buffer so a short delay doesn’t push your dog past the 120-hour limit.
• Ask your agent about HARC’s paperwork pre-check. It costs less than boarding without one, and it catches errors before your pet is in the air.
• Confirm your UK customs agent before you book. It’s required whether or not you use a full-service pet shipper.

For a full walkthrough of the arrival process, see our guide to what happens when your pet arrives at Heathrow’s Animal Reception Centre. For the full set of entry requirements, read our complete guide to pet travel to the UK from the USA.

What Pet Owners Say About Last-Minute Document Problems

Owners who have been through the process often say the same thing about timing. In an r/AmericanExpatsUK thread titled “Leaving on Sunday still haven’t received my USDA approved health certificate,” an owner asked whether to fly with a weekend departure looming and the endorsed certificate still not in hand. One reply was blunt: “Don’t risk it. Like every Island nation, the UK is very serious about incoming animals.”

The same logic applies on the arrival side. If your documents aren’t fully in order, a weekend or bank holiday arrival leaves the least room to recover.

Frequently Asked Questions