Amazon FBA Preparation Services in the UK: A Seller's Guide
01/10/2026
An Amazon FBA prep service is a specialist UK warehouse that gets your products "Amazon-ready": it receives your stock, prepares every unit to Amazon's strict inbound requirements (labelling, poly-bagging, bundling and carton packing), and forwards the cartons to Amazon's fulfilment centres. If you sell on Amazon and cannot, or would rather not, do that preparation yourself, a prep centre handles the whole inbound leg for you.
What FBA prep actually includes
A full prep service covers everything between your supplier and Amazon's receiving dock:
Receiving and inspection: your stock arrives from your supplier or your own storage, is counted, checked for damage and booked in.
FNSKU labelling: every unit gets the correct Amazon barcode label. Wrong or unscannable labels are one of the most common reasons Amazon cannot receive inventory.
Poly-bagging: products that need protection go into poly bags, which Amazon requires to carry a suffocation warning.
Bundling and kitting: multi-packs and sets are assembled and labelled as a single sellable unit.
Carton prep and forwarding: units are packed into cartons that meet Amazon's carton rules, the shipment is created, and a carrier collects the cartons for delivery to the Amazon fulfilment centre.
Not every prep centre offers every one of these, so check the service list before you commit. If you are new to outsourcing logistics entirely, our plain-English guide to what a 3PL does explains how prep fits into the wider fulfilment picture.
Why Amazon's requirements matter so much
Amazon runs one of the strictest inbound operations in retail. Shipments that do not meet its packaging and prep requirements get held up at check-in, and non-compliant stock can be returned to you at your expense. The rules also change: Amazon updates its prep requirements from time to time, and what passed last year may not pass today. Always check the current requirements in Seller Central before a shipment goes out.
The pitfalls that catch sellers out most often:
Unscannable or missing FNSKU labels. If Amazon cannot scan the unit, it cannot receive it.
Poly bags without suffocation warnings. A small detail that causes big delays.
Mixed cartons without proper box-level labelling. Mixing SKUs in one carton without the right labels slows check-in to a crawl.
Cartons over Amazon's size or weight limits. Oversized or overweight boxes can be refused at the dock.
Shipping without an approved shipment plan. If the shipment does not exist in Seller Central, Amazon is not expecting it.
A good prep centre knows these rules cold and tells you when they change, which is exactly what you are paying for.
How the process works, step by step
You tell the prep centre what is coming: quantities, SKUs and the prep each product needs.
Stock arrives at the warehouse and is received, counted and inspected. Damage or shortages are flagged to you before anything is prepped.
Each unit is prepared to Amazon's requirements: labelled, bagged or bundled as needed.
Units are packed into cartons following Amazon's carton rules, and the shipment is created.
A carrier collects the cartons and delivers them to the designated Amazon fulfilment centre.
You track the shipment in Seller Central until Amazon checks it in.
Once the routine is established, most sellers run it on repeat: supplier ships to the prep centre, the prep centre ships to Amazon, and the seller never touches the stock.
Choosing an FBA prep centre: 7-point checklist
Use this before you commit to a partner:
Transparent per-unit pricing. You should see exactly what each service costs per unit, with no hidden extras. Ask what a typical shipment like yours would total.
No fixed contracts. You should not be locked in to prove the model works. Storage and Logistic works with no fixed contracts, so you can scale prep up and down with your selling pattern.
Receiving inspection with reporting. Damage and shortages should be caught and reported before prep, not discovered at Amazon's dock.
Current Amazon requirement knowledge. Ask how they stay on top of Amazon's prep requirement changes, and what happens if a shipment is ever rejected.
Storage for drip-feeding. A prep centre that can hold stock lets you send inventory to Amazon in stages instead of paying Amazon's storage fees on everything at once. Our guide to warehouse storage for growing brands explains the options.
Removal and returns handling. Sooner or later Amazon will send stock back. Your prep partner should be able to receive removal orders, inspect them and get them back into sellable condition.
A named contact you can call. When a shipment is sitting at Amazon's dock with a problem, you want a phone number, not a ticket queue.
For a sense of how prep and storage pricing is structured more broadly, see our guide to 3PL fulfilment costs in the UK.
Selling on Amazon and tired of prepping boxes yourself? Try our pricing estimator for an instant estimate, or call 07380 636829 to talk through your FBA prep needs with our warehouse team.