A brand can be selling on Amazon UK about a week after deciding to. That is the problem. Registration is fast and the listings copy across in an afternoon, while the parts with a real lead time — VAT registration, a returns address, compliance marking, a freight route — wait until the first order forces them.
None of it is hard. Most of it has no American analogue, so it lands late in a US launch plan or not at all. Here is what changes, and the order it wants doing in.
VAT: the threshold you have read about is probably not yours
The number everyone quotes is the UK VAT registration threshold: as at August 2026, £90,000 of taxable turnover in a rolling twelve months. Check the current figure on gov.uk before relying on it, because it has been uprated before and will be again.
Here is the part that catches people out. That threshold applies to businesses established in the UK. If yours has no UK establishment — and a US company selling into Britain almost certainly has none — there is no threshold at all. You are what HMRC calls a non-established taxable person, and the obligation starts at your first taxable supply. A brand planning to register “once we hit the threshold” has been non-compliant since order one.
The second trap is that being VAT-registered and collecting VAT are now separate questions. Since 1 January 2021, where an overseas seller sells goods already in the UK to a UK consumer through a marketplace, the marketplace is treated as the supplier and accounts for the VAT. Amazon handles collection — but that does not release you from registering: you are still making a zero-rated supply to Amazon, and you need the number to make it. Sellers read “Amazon collects the VAT” and conclude they have no filing obligation. They have a nil-rated one, which is still a filing.
Separately, goods sent to a UK consumer from abroad in a consignment not exceeding £135 have their VAT collected by the marketplace at the point of sale rather than at the border. Above £135 it falls due on import, and postponed VAT accounting lets a registered business account for it on the return instead of paying at the frontier and reclaiming later — real money on a first container. Figures as at August 2026; confirm them.
And the arithmetic nobody does before setting the price. The standard UK VAT rate is 20%, and UK consumer prices are shown inclusive of it — the shelf price is the price. Take an illustrative product listed at £24.99: £4.16 of that is VAT, so net revenue is £20.83. Convert a US price quoted net of sales tax and you have given away a fifth of your revenue, and you find out in month two.
EORI, and who the importer of record actually is
You need a GB EORI number to import into Great Britain, and a separate XI EORI if goods move into or through Northern Ireland. Neither takes long, and both need to exist before the freight does.
The importer of record question is the one that costs money. Someone must be legally responsible for the customs declaration, the duty and the import VAT, and Amazon will not be that party for your FBA inbound — it does not act as importer of record and refuses shipments arriving with duties unpaid or a fulfilment centre named as importer. So it is you, through a customs agent, or a third party you appoint. Decide before the pallets move: a shipment with nobody named sits on demurrage.
Fulfilment after Brexit: EFN and Pan-EU are not what they were
Before 2021 one pool of European FBA stock served the UK and the EU interchangeably. That is over, and the replacement is routinely misdescribed.
- Pan-European FBA no longer covers the UK. It distributes inventory across participating EU countries; UK stock is a separate pool you send, forecast and replenish yourself. If the plan is “we are already Pan-EU, so the UK is covered”, it is not, and has not been since the transition period ended.
- Cross-border EFN is a customs movement now. Amazon suspended the European Fulfilment Network between the UK and the EU at the start of 2021, later restored it in a form involving customs formalities, and has revised the terms since. Treat it as available but conditional, check Amazon’s current EFN documentation, and price the customs handling in.
- Delivery promise is the consequence. Serving a UK buyer from EU stock adds a border to every order. Local stock wins the promise, and on Amazon the promise is a conversion input.
The practical read: if the UK is a real market, hold UK stock. If it is a test, prove the demand from a third-party UK warehouse first.
Compliance: marking, a UK address, and the schemes nobody budgets for
UKCA and CE. UKCA is the Great Britain conformity marking introduced after Brexit. It was originally to replace CE marking outright, and then it was not: the government has since confirmed that CE marking continues to be recognised in Great Britain indefinitely across most product areas covered by the main regulations, with UKCA valid alongside it. Some areas sit outside that — medical devices and construction products among them — and Northern Ireland follows its own rules. This is the most-changed area of UK product law since 2021, so verify your regulation with the Office for Product Safety and Standards rather than trusting any article, this one included.
A UK economic operator. For most regulated goods placed on the GB market, a business established in Great Britain must be identifiable as the importer or authorised representative, with its name and a contactable address on the product or its packaging. Sell from the US with no UK entity and you need an appointed responsible person; Amazon asks for that data in Seller Central where it applies. It is a real appointment carrying real liability, not an address you borrow.
WEEE and packaging. Place electrical or electronic equipment on the UK market and you are a producer under the WEEE regulations and must register — larger producers through an approved compliance scheme, while as at August 2026 those placing under five tonnes a year can register directly with the environmental regulator. Batteries carry parallel obligations. Extended producer responsibility replaced the old packaging waste regime: as at August 2026 the tests are turnover and tonnage together, broadly in scope above £1m and 25 tonnes a year, and a large producer — fees as well as reporting — above £2m and 50 tonnes. Plastic Packaging Tax applies separately below 30% recycled content once you handle ten tonnes in twelve months. Check every figure against gov.uk.
None of it is a large cost against a launch. All of it has a registration lead time, and every item can stop a listing going live.
Why your US listing copy underperforms here
Copying the US listing into the UK catalogue is the most common unforced error, and it fails for a reason that has nothing to do with tone. It fails at the index.
UK shoppers type different head terms. Not variants — different words. A pushchair is not a stroller, nappies are not diapers, a torch is not a flashlight, a bin is not a trash can, a hob is not a stovetop, a tap is not a faucet, a cot is not a crib. If the noun a British shopper searches for appears nowhere in your title, bullets or backend search terms, you are not competing for that query. You are not ranking badly. You are absent. And the specifications diverge too:
- Mains electricity is 230V at 50Hz and plugs are the three-pin BS 1363 type. A listing showing a US plug tanks conversion even with a UK plug in the box, because the shopper resolves the doubt by leaving.
- Sizes do not map. UK clothing and shoe sizing differs from US, and bedding differs entirely — a UK double is not a US full, and the shopper who assumes otherwise returns it.
- Metric first: centimetres, kilograms, litres, A4 rather than Letter.
- Spelling is an indexing issue as well as a credibility one — optimise, colour, aluminium, fibre. American spellings miss the queries typed the British way.
- The retail calendar differs: no Thanksgiving, but Boxing Day, a September back-to-school peak, and a Black Friday that behaves differently.
Rewrite for the UK index rather than translating, then pull Search Query Performance for the UK marketplace and let the real queries correct you.
The channels a US agency will not mention
Once the compliance work is done you have most of what it takes to sell anywhere in the UK: the VAT registration, the address, the marking and the returns route are the same assets on every channel. Almost nobody exploits that, because an agency working from the US knows Amazon and Walmart and stops.
- B&Q Marketplace — home, garden and DIY, with a curated approval process. The approval is the point: fewer sellers get through, and the traffic arrives with a job in mind. High-intent shelf space most of your Amazon competitors are not on.
- OnBuy — UK-owned, and it does not stock or sell its own products, so the platform is not competing with you on your own listing. A structurally different relationship from a retailer that also sells.
- eBay UK — a bigger channel for British shoppers than most US teams expect. Wayfair is worth a look for furniture and homeware.
Do not launch on all of them at once. The expensive part of a UK entry is compliance and stock, and both are paid for by the time Amazon UK goes live. A second channel afterwards is a listing exercise, not a market entry.
The order to do it in
- Take UK VAT advice and start the registration. Longest lead time, blocks the most, and the non-established rule makes it due earlier than you think.
- Apply for the GB EORI, and the XI EORI if Northern Ireland is in scope.
- Settle compliance in parallel: your marking regime, your GB responsible person, and the scheme registrations you are obliged to hold.
- Fix the importer of record and the customs agent before booking freight, and decide UK stock against cross-border fulfilment on delivery promise, not warehousing cost.
- Sort the returns address. A UK-facing listing without a UK return route generates returns you pay international freight on, one parcel at a time.
- Rewrite the listings for the UK index. Then, and only then, switch the ads on.
If you do one thing this week, do the first. Everything else on that list is a fortnight of admin. The VAT position is already running whether or not you have started it, and it is the only item that gets more expensive while you wait.