How to Move Imported Stock Into a UK Bonded Warehouse: Documents, Timelines and Setup Steps

To move stock into a bonded warehouse in the UK, you need a GB EORI number, a commodity code for every product, a customs agent who has the warehouse's authorisation details, and a customs warehousing declaration made in the Customs Declaration Service. The goods then travel straight to the named warehouse within 5 working days of clearance and are received against your advance shipping notice.

A customs bonded warehouse is an HMRC-authorised site where imported goods can be stored with customs duty and import VAT suspended until they are released for sale in the UK, moved to another procedure or re-exported. gov.uk confirms that duty and import VAT only become due if the goods are released into free circulation.

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Fulfil with Synergy is a founder-led UK 3PL and growth partner for ambitious, fast-growing consumer brands, running a technology-led fulfilment centre in Northampton for health, wellness, beauty, supplement and lifestyle brands across D2C, marketplace, retail and wholesale. Our customs bonded warehouse service runs in the same building and warehouse management system as our everyday fulfilment. This guide is the setup sequence we walk new bonded clients through.

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Customs rules change and every import is different. Use this as a planning guide and confirm your own position with HMRC or a customs adviser.

What you need before stock ships

A first bonded inbound is most easily held up by a document that nobody was clearly responsible for. Settle ownership of each item below before your supplier books freight.

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Before booking freight, you need a GB EORI number, which you obtain from HMRC as the importer. Before the first booking, you also need a commodity code for every SKU, usually prepared with your customs agent.

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During setup, the bonded warehouse operator provides its warehouse authorisation details and warehouse ID. Your agent needs these before the first declaration. You must also give the agent written instructions before the first shipment leaves the supplier.

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At despatch, your supplier provides the commercial invoice and a packing list showing cartons, units and weights per carton. Copy the invoice to your agent before arrival. The carrier or freight forwarder provides the bill of lading, air waybill or CMR at despatch.

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If you intend to claim preferential duty when goods are released, obtain proof of origin from your supplier before arrival. If the goods are controlled, you are responsible for the import licence, which is recorded on entry and produced on release.

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Before the delivery is booked in, submit an ASN (pre-advice) with SKUs and quantities through the client portal. Your haulier must arrange a dock slot with the warehouse before the vehicle leaves the port.

Step 1: Confirm bond is right for this stock and agree the setup

Start by deciding which products and shipments go into bond, because not every import benefits.

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We cover how bonded storage helps cashflow and who it suits in a separate guide, along with what a customs bonded warehouse is and whether you need one. Agree with your warehouse which SKUs will be bonded, which arrive duty paid, and whether any need special storage. gov.uk puts the onus on you as depositor to make sure the warehouse is approved for your goods.

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Typical time: 1 to 2 weeks, run alongside commercial agreement.

Step 2: Get or check your GB EORI number

Your business needs a GB EORI number to import into Great Britain, and it goes on every customs declaration. HMRC says you usually get one immediately, but it can take up to 5 working days if your application needs checking.

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If you already import, check that the EORI on your supplier and forwarder paperwork is the right one. For how EORI numbers, Incoterms and paperwork fit together on cross-border shipments, see our guide to EORI numbers, Incoterms and customs paperwork.

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Typical time: same day to 5 working days.

Step 3: Classify every SKU with the right commodity code

The commodity code sets the duty rate, import VAT treatment and any licence or quota measures, so it has to be right before goods enter bond. HMRC states that an 8-digit commodity code is mandatory on Customs Declaration Service declarations, with limited exceptions, and you look codes up using the Trade Tariff (gov.uk guidance).

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In beauty, supplement and wellness ranges, a serum, a gummy and a mixed gift set can fall under very different headings. If you are unsure, apply for an Advance Tariff Ruling, which HMRC says is generally valid for 3 years.

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Typical time: 1 to 3 weeks for most catalogues; longer if you request a ruling.

Step 4: Appoint your customs agent and give them the warehouse's details

Most brands use a customs agent or freight forwarder to lodge the declaration, and that agent needs the warehouse's authorisation details before the goods land. When you store goods in a public customs warehouse run by someone else, gov.uk confirms you do not need your own HMRC authorisation to be a depositor. You do take on responsibility for any duty and import VAT that becomes due.

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HMRC's notes for procedure code 7100 (entry to a customs warehouse) require the declaration to quote the authorisation type, the holder's EORI and the warehouse ID, and state that agents need prior written approval from the authorisation holder. So ask your warehouse for those details in writing and pass them on.

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Typical time: about 1 week, including written instructions to the agent.

Step 5: Set up SKUs and send the ASN

The warehouse can only receive stock it is expecting, so every SKU needs a record and every delivery needs an advance shipping notice. In the Fulfil with Synergy client portal you create SKU records, raise pre-advice and track inbound status yourself, 24 hours a day.

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Make the ASN match the commercial invoice line for line, including batch numbers where you track them. Any gap becomes a customs discrepancy as well as a stock one.

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Typical time: SKU setup during onboarding; each ASN raised as soon as the supplier confirms the packing list.

Step 6: Lodge the customs warehousing declaration

The goods are declared into customs warehousing rather than into free circulation, which is what suspends duty and import VAT. gov.uk lets you use a full import declaration or a simplified declaration, either through an entry in the declarant's records or the simplified declaration procedure.

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As depositor you must give the warehousekeeper all the details of the import declaration. In practice, your agent sends us the entry details as soon as it clears, so our team can match them to the ASN before the vehicle arrives.

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Typical time: lodged around arrival at the port; allow extra time if HMRC selects the goods for checks.

Step 7: Move the goods straight to the named warehouse

Goods must go directly to the warehouse named on the declaration and arrive within 5 working days of being cleared. HMRC's receiving guidance adds that delays must be explained to the supervising office and goods cannot wait on a dockside. HMRC clarified in October 2024 that the limit means working days, not calendar days.

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Book the haulage and the dock slot together so the container does not clear and then sit waiting for a slot.

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Typical time: up to 5 working days allowed; plan to deliver well inside it.

Step 8: Receive, reconcile and resolve differences

The warehousekeeper checks what arrived against what was declared and records it in the stock records. HMRC requires all differences between the declaration and the goods received to be reported to the supervising office, with shortages notified within 14 days of entry to the procedure. Over shipments are dutiable and need a revised commercial invoice if they are to be warehoused.

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Typical time: counted and reconciled on receipt; any discrepancy worked through with you well inside the 14 days.

A realistic timeline from first call to first pallet in bond

For a new client, a first bonded inbound fits inside our standard 8 to 10 week onboarding plan. The customs preparation runs in parallel with integration and testing, so the paperwork is ready when the first container lands.

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During weeks 1 to 2, the Foundations phase, agree which SKUs go into bond, check your EORI, start commodity classification and choose your customs agent.

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During weeks 3 to 5, the Build phase, SKU records are created in the portal and warehouse management system (WMS), warehouse authorisation details are issued for your agent, and the integration is built. Your supplier is also briefed on the required invoice and packing list format.

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During weeks 6 to 7, the Test phase, carry out joint integration and end-to-end testing, run through the document pack for the first shipment, and complete the Go/No-Go review.

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During weeks 8 to 10, Cutover and go-live, the first container is declared into customs warehousing, delivered to a pre-booked slot, received and reconciled. It becomes visible as bonded stock, and hypercare begins.

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The two things that stretch this timeline most are unresolved classification and a customs agent who first sees the paperwork when the ship docks. If you want bonded stock in Northampton for Black Friday on 27 November 2026, those two are the conversations to have this week.

What happens at the Fulfil with Synergy dock when your container arrives

When your container reaches Ravens Way, it is unloaded into a pre-booked dock slot and received against the ASN you raised, carton by carton and pallet by pallet. Our team scans at pallet and carton level, samples for quality, and captures each new SKU on the Cubiscan for weight, dimensions and product imagery.

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Anything that does not match the ASN is flagged in real time, photographed, logged and resolved jointly with you. In bond, that same evidence supports the difference report to HMRC. Stock is then put away to AutoStore, pallet or shelf locations, and recorded in RedPrairie Dispatcher, our Tier 1 warehouse management system, with a time-stamped audit trail down to unit, batch and location. You see it in the portal as soon as it is booked in. See our technology and automation at the Northampton site.

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Inbound rarely arrives neatly. When Hello Bubble's requirement grew to 400,000 kits across 8 variations, SKUs and packaging landed at different times, and the team ran a staggered inbound programme for Hello Bubble over 10 weeks. Bonded containers that arrive out of sequence are handled with the same discipline.

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As Gary Rees puts it: "As a founder-led business, we make our decisions with the knowledge that every one of our clients also has a founder who loves their business as much as I do." For a first bonded inbound, that means a named Client Manager, an Onboarding Manager who plans the inbound with you, and a reconciliation report at the end that tells you exactly what is in bond.

FAQ

Do I need my own HMRC authorisation to store goods in someone else's bonded warehouse?

No, not if you use a public customs warehouse run by a 3PL. gov.uk says depositors do not need HMRC authorisation to use a public customs warehouse. Authorisation is needed to run a warehouse as a warehousekeeper, and in a private customs warehouse the warehousekeeper and the depositor are the same business.

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So the real choice is between applying to run your own private customs warehouse, with your own premises, records and HMRC approval, or depositing goods with an operator who already holds one. For most growing brands, the second route removes months of setup and puts the compliance controls in the hands of a team that runs them every day.

Do I need a customs guarantee to put stock into bond in Great Britain?

Usually not. HMRC's guidance says you will not usually need a guarantee to use customs special procedures or duty deferment accounts in Great Britain, and that you will be told during the application process if you do. Northern Ireland is different: a guarantee is usually required there.

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A guarantee is separate from how you pay duty and import VAT when stock leaves bond. If you plan to release goods regularly, agree with your customs agent early how those payments will be made, because that choice affects your cashflow more than the entry into bond does.

Can an overseas brand move stock into a UK bonded warehouse?

Yes, with a UK representative. gov.uk says the depositor must be established in the UK. An overseas owner using a public customs warehouse can appoint a UK-established indirect representative, who is jointly and severally liable with the owner for any duties and import VAT, and must show that role on the customs declaration.

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Settle who acts as your representative before the first shipment leaves your supplier, because the representative's EORI and details go on the declaration that enters goods into customs warehousing, and your agent cannot lodge it without them.

Can I still claim preferential duty if my goods sit in bond?

Yes, but the claim is made when goods are released into free circulation, not on entry. You need a valid proof of origin at the point of release, and HMRC cannot normally accept one presented more than 2 years after its date of issue.

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Collect proof of origin from your supplier with the shipping documents and send it to the warehouse at receipt. The warehousekeeper endorses certificates of origin with the stock reference and storage date, and records them in the warehouse records, so your claim is ready when you release the stock.

To move stock into a bonded warehouse without delays, get four things settled before the goods ship: your EORI, the commodity codes, a briefed customs agent with the warehouse's details, and an ASN that matches the invoice.

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Fulfil with Synergy runs bonded storage and fulfilment from one Northampton site, one warehouse management system and one portal, with an onboarding team that plans the customs paperwork alongside your integration. If you have imported stock on the water or a container planned for peak, talk to the Fulfil with Synergy team about your first bonded inbound.

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