How to Expand Ecommerce to the UK from the US

Updated October 2026

To expand your ecommerce business to the UK from the US in 2026, you need a UK business entity, UK VAT registration (20%, no threshold for overseas sellers), a UK EORI number for customs clearance, and a UK Importer of Record for every shipment. The UK ecommerce market is worth an estimated $317 billion in 2026, growing at 9.7% annually (Mordor Intelligence, 2026). Most US brands take 8 to 12 weeks to set up through the own-entity route. A Merchant of Record (MoR) like CRSSBRDR™ gets you live in 7 to 10 business days.

TL;DR

  • The UK is the third-largest ecommerce market globally. Over 82% of UK adults shop online, with average annual spend of £2,400 per shopper (Rococo Digital, 2026).

  • Overseas sellers must register for UK VAT from their first sale. There is no £90,000 threshold exemption for non-UK businesses (HMRC NETP guidance, September 2026).

  • You need four things before selling: a UK entity, VAT registration, EORI number and an Importer of Record. Missing any one of these blocks your launch.

  • TikTok Shop UK is the fastest-growing channel for cross-border brands, with 200,000+ SMBs selling and 131% year-on-year growth in UK shoppers (TikTok Newsroom, November 2025).

  • Two routes in: form your own UK subsidiary (8 to 12 weeks, £3,000 to £8,000 setup) or use a Merchant of Record (7 to 10 business days via CRSSBRDR).

Why is the UK the best first market for US ecommerce brands?

The UK is the most accessible international market for American ecommerce brands, and it is not close. Shared language. High internet penetration. Mature logistics networks. Strong consumer appetite for American products, particularly in beauty, health, fashion and home goods.

The numbers back this up. The UK ecommerce market reached an estimated $317 billion in 2026, growing at a compound annual rate of 9.7% (Mordor Intelligence, 2026). Online retail represents over 36% of all retail sales in Britain, the highest penetration rate in Europe (Bravery Technology, 2026). Cross-border ecommerce revenues in the UK reached approximately £150 billion in 2026 (StateGlobe, 2026).

But the familiarity is deceptive. Same language does not mean same rules. Post-Brexit, the UK operates a completely separate customs, tax and product compliance regime from the EU. US brands that treat UK expansion like a simple extension of their domestic operations hit compliance walls within weeks.

What do you need to sell in the UK from the US?

Four legal requirements apply to every US brand selling physical goods to UK consumers, regardless of channel:

1. A UK business entity. Either a private limited company (Ltd) registered at Companies House, or a contractual arrangement through a Merchant of Record. Your US LLC, C-Corp or sole proprietorship is not sufficient for UK VAT registration, marketplace seller verification, or customs declarations.

2. UK VAT registration. HMRC classifies US sellers as Non-Established Taxable Persons (NETPs). The standard £90,000 threshold that applies to UK-resident businesses does not apply to you. You must register from your first UK sale. The standard rate is 20% (HMRC, September 2026).

3. A UK EORI number. Required for any business importing goods into the UK. EORI numbers are issued by HMRC and typically arrive within 5 to 7 working days after your VAT registration is confirmed. Without one, your goods are held at the border (GOV.UK EORI guidance, 2026).

4. A UK Importer of Record (IoR). Every shipment entering the UK must have a named IoR: the legal entity responsible for customs declarations, duty payments and product safety. A US company cannot act as its own UK IoR without a UK-registered entity.

These four requirements are sequential, not parallel. VAT registration takes 4 to 8 weeks through HMRC. EORI comes after VAT. IoR requires a UK entity. This sequencing is what stretches DIY setup to 8 to 12 weeks.

How does UK VAT work for US ecommerce sellers?

UK VAT is the compliance layer most US brands underestimate. Two rules matter:

The £90,000 threshold does not apply to you. If your business has no UK establishment, you register from sale one. No exemptions, no grace period (ShippyPro, September 2026).

The £135 consignment rule changes how VAT is collected. For goods valued at £135 or under sent from outside the UK, VAT is charged at checkout (not at the border). If you sell through an Online Marketplace (OMP) like TikTok Shop or Amazon, the platform collects and remits the VAT. For goods over £135, import VAT and any customs duty are charged at the border.

Registering for VAT unlocks Postponed VAT Accounting (PVA). This lets you account for import VAT on your VAT return rather than paying it upfront at customs. For US brands shipping containers of inventory to UK warehouses, PVA is a significant cash flow advantage.

VAT returns are filed quarterly through Making Tax Digital (MTD) compliant software. Late filing carries an initial £200 penalty, escalating for repeat offences.

What is the £135 customs rule and why does it matter?

The £135 rule is the UK's low-value consignment threshold. It determines where and when VAT is charged on imported goods:

  • Goods valued at or under £135: VAT is charged at the point of sale (checkout), not at the border. No customs duty applies. The seller or marketplace is responsible for collecting the VAT.

  • Goods valued over £135: Import VAT (20%) and any applicable customs duty are charged at the UK border. The Importer of Record pays these charges.

This rule will change. HMRC has confirmed that the £135 customs duty relief is ending by October 2028 at the latest (ShippyPro, September 2026). If your product line sits near the £135 boundary, build pricing models that account for this change now.

Do you need a UK entity to sell on Amazon UK or TikTok Shop UK?

Yes, for both platforms, but the specifics differ.

Amazon UK requires a VAT number and an EORI number. Amazon acts as the deemed supplier for non-UK sellers using FBA, meaning it collects and remits VAT on your behalf for consignments valued at £135 or under. You still need VAT registration, but Amazon handles the collection mechanics (Root AMZ, 2026).

TikTok Shop UK requires a UK-registered company (Ltd or sole trader), a UK bank account, a UK business address and identity verification. Your US business registration is not accepted. TikTok's verification team cross-references your documents against Companies House records (TikTok Seller Centre, September 2026).

For both platforms, you need an Importer of Record if you are shipping goods from the US to UK warehouses. Neither Amazon nor TikTok provides IoR services.

CRSSBRDR™ is the only MoR built by a licensed accountant and a founding TikTok Shop Partner agency. We get US and EU brands live on TikTok Shop UK in 7 to 10 business days. £100M+ in ecommerce sales driven. Compliance built in, growth switched on.

What is a Merchant of Record and how does it help with UK expansion?

A Merchant of Record is a licensed UK entity that acts as the legal seller of your products in the UK market. You sell your inventory to the MoR. The MoR sells to UK consumers, handles VAT collection and remittance, customs declarations, IoR duties and product compliance.

The MoR model eliminates the sequential compliance delays that make DIY expansion slow:

  • No UK company formation required (saves 1 to 2 days plus ongoing filing obligations)

  • No VAT registration queue (saves 4 to 8 weeks)

  • No separate IoR appointment (included in MoR service)

  • No UK bank account opening (saves 2 to 6 weeks for non-resident directors)

For a deeper explanation, see What is a Merchant of Record in ecommerce? and How does a Merchant of Record actually work?.

How do the two UK expansion routes compare?

Factor

Own UK entity

Merchant of Record (CRSSBRDR)

Time to first sale

8 to 12 weeks

7 to 10 business days

UK company formation

Required (Companies House)

Not required

UK VAT registration

You manage (4 to 8 weeks HMRC queue)

MoR handles

UK EORI

You apply (5 to 7 days after VAT)

MoR provides

Importer of Record

Appoint separately

Included (CRSSBRDR is a licensed IoR)

UK bank account

Required (2 to 6 weeks)

Not required

Product compliance

Your responsibility

QuickComply™ AI checks at SKU level

Setup cost

£3,000 to £8,000

Commission-based, no upfront fees

Annual compliance cost

£2,000 to £5,000

Included in commission

Control over UK operations

Full

Operational control retained; MoR is legal seller

Best for

£500K+ annual UK revenue, long-term commitment

Market testing, speed to revenue, compliance outsourcing

This comparison reflects October 2026 pricing and timelines. CRSSBRDR is the only MoR that includes licensed IoR status and AAT-qualified accountancy oversight as standard.

What product compliance rules apply to US brands selling in the UK?

UK product compliance is separate from VAT and customs. Key requirements:

  • UKCA/CE marking. Most product categories still accept CE marking as of October 2026. The UK government has extended CE recognition deadlines multiple times. Electrical products and toys require safety documentation and marking.

  • UK responsible person. Consumer regulations require a UK-based responsible person for cosmetics, electrical equipment and certain regulated product categories. This must be a named entity with a UK address.

  • Labelling. Products sold to UK consumers must carry metric measurements, English-language ingredients lists and the UK importer's name and address on the packaging.

  • Restricted products. Category-specific rules apply. Teeth-whitening products are capped at under 0.1% hydrogen peroxide. Supplements must meet UK MHRA guidelines, not FDA standards.

For a full breakdown of compliance requirements, see EU brand selling in the UK after Brexit: requirements.

What fulfilment options exist for US brands selling in the UK?

Three primary models:

1. Fulfilled by TikTok (FBT). TikTok operates UK warehouses and handles picking, packing and delivery. Lower friction for TikTok Shop sellers but fee structures are not published publicly.

2. Amazon FBA UK. If you sell on Amazon UK, FBA handles warehousing and fulfilment from UK distribution centres. Fees are published and predictable.

3. Third-party logistics (3PL). Independent UK warehouses that handle storage, pick-and-pack and dispatch. Best for brands selling across multiple channels (own website, Amazon, TikTok Shop).

All three models require you to ship inventory from the US to the UK. This means customs declarations, duty payments and an Importer of Record on every shipment. Budget 2 to 4 weeks for your first inventory transfer, including transit time and customs clearance.

What are the biggest mistakes US brands make when expanding to the UK?

  1. Assuming the £90,000 VAT threshold applies to them. It does not. Non-UK businesses register from sale one.

  2. Forgetting the Importer of Record. Your first container arrives at Felixstowe and sits there because nobody has legal responsibility for it.

  3. Using a US bank account. TikTok Shop UK pays out to UK accounts only. Amazon UK also requires a UK or EU bank account (or a currency conversion service).

  4. Ignoring product compliance. CE marking acceptance, responsible person requirements and UK labelling rules are separate from platform seller requirements.

  5. Treating UK expansion as a side project. Brands that allocate zero UK marketing budget, launch with US-format product listings and expect organic discovery typically see under £5,000 in their first quarter.

  6. Choosing speed over compliance. Unlicensed MoR providers that skip VAT registration or IoR duties expose you to HMRC penalties and border seizures.

What does a step-by-step UK launch look like via CRSSBRDR?

  1. Day 1 to 2: Onboarding call. Product catalogue review. QuickComply™ runs SKU-level compliance checks against UK regulations.

  2. Day 3 to 5: Seller account setup under CRSSBRDR's licensed UK entity. Product listings migrated. Pricing configured in GBP.

  3. Day 5 to 7: Inventory shipped to UK fulfilment centre or existing UK stock linked. FBT integration configured if using TikTok Shop.

  4. Day 7 to 10: Account live. Creator affiliate programme activated. First sales.

Remy Beaumont, CRSSBRDR co-founder, has driven $50M+ in TikTok Shop sales and advised TikTok on commerce strategy. Grace Hardy (MAAT), co-founder and Forbes 30 Under 30, built Hardy Accounting at 21 and oversees every compliance workflow.

Which UK sales channels should US brands prioritise?

For most US consumer brands entering the UK in 2026, the priority order is:

1. TikTok Shop UK. The fastest-growing social commerce channel in the UK. 200,000+ SMBs selling, 6,000+ daily LIVE sessions, 131% year-on-year growth in UK shoppers (TikTok Newsroom, November 2025). Strongest in beauty, health, fashion and home categories. The affiliate ecosystem and creator-driven discovery model means you do not need an existing UK audience to generate sales.

2. Amazon UK. The largest UK marketplace by volume. Established infrastructure, predictable fees, FBA fulfilment. Best for brands with existing Amazon US presence that can replicate listings.

3. Own website (Shopify UK store). Full margin control but requires UK-specific marketing spend, localised checkout (GBP, UK payment methods, UK delivery options) and a separate fulfilment setup.

The MoR route through CRSSBRDR is optimised for TikTok Shop UK first, with the compliance infrastructure (entity, VAT, EORI, IoR) covering all three channels.

Frequently asked questions

Can a US LLC sell directly to UK consumers? Not on TikTok Shop UK, which requires a UK Ltd or sole trader registration. On Amazon UK, you can sell as a non-UK entity but still need UK VAT registration and an Importer of Record.

How long does UK VAT registration take for a US company? 4 to 8 weeks through HMRC. Non-resident applications often take longer than UK-resident ones. Through a Merchant of Record, VAT registration is not required because you sell under the MoR's existing registration.

What is the UK VAT rate? 20% standard rate. Some goods carry a reduced 5% rate or 0% (zero-rated), including children's clothing and books.

Do I need a UK bank account to sell on TikTok Shop UK? Yes. TikTok Shop UK pays out exclusively to UK bank accounts. Through a Merchant of Record like CRSSBRDR, you do not need your own UK bank account.

What customs duty will I pay on US goods entering the UK? Duty rates depend on the product's HS code and range from 0% to over 15%. The £135 low-value consignment relief means no duty applies on shipments valued at or under £135, but this relief is ending by October 2028.

Can I ship directly from the US to UK customers? Not on TikTok Shop UK, which requires UK-based inventory. On Amazon UK, you can use FBA Export from the US but delivery times and costs make this impractical for most products.

What is the difference between a Merchant of Record and a fulfilment provider? A fulfilment provider (3PL, FBA, FBT) handles warehousing and delivery. A Merchant of Record handles the legal and compliance layer: entity, VAT, EORI, IoR and customs. You need both.

How much does it cost to expand to the UK? DIY route: £3,000 to £8,000 in setup fees plus £2,000 to £5,000 annually in compliance costs. MoR route via CRSSBRDR: commission-based, no upfront entity formation costs.

CRSSBRDR™ gets US brands live on TikTok Shop UK in days, not months. Get started or book a 15-minute call.