Pick and Pack Warehouse Process: A UK SME Guide
Run an accurate in-house pick and pack warehouse. A UK guide to the six steps, picking methods, packing benches, packaging rules and a worked GBP example.
A pick and pack warehouse turns a customer order into a sealed, labelled parcel: staff pick each item from its storage location, check it against the order, pack it in suitable packaging and hand it to the carrier. For a UK ecommerce brand or wholesaler running its own stockroom, the process decides how many orders leave on time, how many go out wrong and how much each one costs in labour and packaging.
If your stock figures and channel orders are already drifting apart before anyone reaches the shelf, start with our ecommerce inventory automation page, because a pick list is only as good as the stock and order data behind it. This guide covers the in-house process itself: the six steps, the picking methods, how to set up a packing station, the checks that stop mis-ships, the UK packaging and manual handling rules worth knowing, and a worked example in GBP.
What is a pick and pack warehouse?
“Pick and pack” describes a way of fulfilling orders item by item rather than moving whole pallets or cases. It is typical of ecommerce, spare parts, cosmetics, books and any business whose customers order a few units of several products. A wholesale operation that ships full cartons to trade customers may pick by the case instead, but most wholesalers end up running a pick and pack area for smaller trade orders and samples.
The term covers three things at once:
- A process: the steps every order follows, from release to despatch.
- A layout: storage, pick faces, packing benches and a despatch area arranged so goods flow one way.
- A record: each step confirmed in a system, so stock, orders and shipments agree.
It is also sold as a service. A third-party logistics (3PL) provider will store your stock and pick and pack for a fee per order, line or item. Whether to keep it in-house or outsource it is a separate decision, covered in our guide to choosing a 3rd party warehouse or your own. The rest of this guide assumes you run the process yourself.
The pick and pack process, step by step
| Step | What happens | Record created | Common failure |
|---|---|---|---|
| 1. Order release | Orders are checked for payment, address and stock, then released to the warehouse in a batch or wave | Order status “released”; stock reserved | Orders released for stock that is not on the shelf |
| 2. Pick list | The system groups lines by location and sorts them into a walking route | Pick task per line | List sorted by order number, not location, so pickers zig-zag |
| 3. Picking | Picker goes to each bin, scans the location and item, confirms the quantity | Stock moved from bin to tote or trolley | Wrong item from a neighbouring bin, or a short pick not reported |
| 4. Verification | At the bench, each item is scanned against the order | Order lines confirmed | Visual check only, so similar variants slip through |
| 5. Packing | Box or mailer chosen, item protected, documents added, parcel sealed and weighed | Parcel weight and dimensions | Oversized box, so higher postage and more void fill |
| 6. Labelling and despatch | Carrier label printed, parcel sorted by carrier, handed over and manifested | Shipment and tracking number | Label printed but parcel not loaded, so it shows “despatched” while still on the floor |
Two points make the difference between a smooth process and a noisy one. First, release only what you can fulfil. An order that reaches a picker for stock that is not there wastes a walk and creates a part-picked tote someone has to resolve. Second, separate “label created” from “handed to carrier”. They are different events, and customer service needs to know which one has happened.
Picking methods for a small warehouse
The right picking method depends on order volume, lines per order and how far pickers walk. Our warehouse picking solution guide goes deeper on the technology; this table is the practical summary for an SME.
| Method | How it works | Suits | Watch out for |
|---|---|---|---|
| Single-order (discrete) | One picker, one order, one trip | Low volume, large or bulky items, urgent orders | Walking time grows with every order |
| Batch | One picker collects several orders in one trip, then sorts them | Many small orders with overlapping SKUs | Sorting errors at the bench unless each order has its own tote or slot |
| Zone | Each picker covers one area; orders pass between zones | Larger sites, distinct product areas | Hand-offs between zones need a clear owner |
| Wave | Orders released in timed groups, often by carrier cut-off | Several carriers with different collection times | Poorly timed waves leave packers idle, then swamped |
Most small UK warehouses start with single-order picking and should. The signal to change is simple: if pickers spend more time walking than picking, batch picking will usually pay first. Zone and wave picking come later, when the site or the carrier schedule demands them.
Whatever the method, picking depends on every location having a unique, scannable address. If your racking is still labelled by memory, fix that first with our guide to warehouse bin locations and a proper warehouse label system. And keep the pick faces topped up from reserve stock, or pickers will find empty bins while the stock sits overhead; pick face replenishment covers the triggers.
Setting up the packing station
A packing bench is where speed and accuracy are won or lost. A practical layout for a one- or two-person bench:
- Work surface at a comfortable height for the people using it, with the heaviest packaging stored between knee and shoulder height, not on the floor.
- Scanner and screen within reach, showing the order lines and a clear pass or fail on every scan.
- Packaging in a fixed order, smallest to largest, so the packer reaches for the right size without thinking.
- Void fill, tape and inserts on the side of the packer’s working hand.
- Scales built into the bench so the parcel weight goes straight onto the label.
- Label printer next to the scale, printing only after verification passes.
- Exception shelf for orders that fail a check, so they never get packed “to sort out later”.
Choosing packaging
Use the smallest box or mailer that protects the item. Oversized packaging costs twice: more material, and potentially a higher postage band if the parcel moves into a larger size or weight tier with your carrier. Keep a short, fixed range of sizes mapped to your products, and record which box each SKU or common combination needs. That turns packaging into a system decision rather than a guess at the bench.
Accuracy checks that stop mis-ships
Most mis-ships come from four places: the wrong item picked from a neighbouring bin, the right item in the wrong variant, the wrong quantity, and two orders swapped at the bench. Each has a matching control.
| Error | Control | Where it sits |
|---|---|---|
| Wrong item | Scan the location, then the item, at the pick face | Picking |
| Wrong variant (size, colour) | Barcode per variant, not per product family | Product data |
| Wrong quantity | Scan each unit, or confirm a counted quantity for multiples | Picking and packing |
| Orders swapped | One tote per order, scanned at the bench before items | Packing |
| Short pick hidden | Picker must record a shortage; order held, not packed partly | Picking |
Measure accuracy consistently. A useful definition is orders despatched with every line correct, divided by orders despatched, counted from customer complaints and returns that you have confirmed as warehouse errors. Track it weekly alongside orders per picker-hour, so faster picking that creates more mistakes shows up straight away.
UK rules that touch pick and pack
This is general information drawn from GOV.UK and HSE guidance, not legal advice. Check your own position with the relevant regulator.
Manual handling. The HSE says the Manual Handling Operations Regulations “require employers to avoid, assess and reduce the risk of injury from manual handling” (HSE). In a pick and pack area that means looking at where heavy SKUs are stored, how high packers reach for packaging and how parcels are moved to despatch.
Packaging Extended Producer Responsibility (EPR). GOV.UK lists “packing goods or filling packaging” as a packaging activity. A UK business is an obligated producer if it supplied or imported more than 25 tonnes of packaging in the previous year and has an annual turnover of £1 million or more. Small producers must register and report data each year; large producers (over £2 million turnover and more than 50 tonnes) have further duties, including fees for household packaging (GOV.UK). If you pack goods in your own warehouse, keep a record of the packaging you use, by material and weight.
Plastic Packaging Tax. This applies to businesses that manufacture or import 10 tonnes or more of finished plastic packaging components in 12 months. Packaging with less than 30% recycled plastic is taxable, at £228.82 per tonne from 1 April 2026 (GOV.UK). Most SMEs buying UK-made mailers will not be liable themselves, but if you import plastic packaging, check whether you cross the threshold.
A worked example: single-order vs batch picking
Hypothetical example, GBP. Every figure below is an illustrative assumption, not a benchmark or client result.
A UK online retailer ships 400 orders a day, averaging 2.5 lines per order. Labour is costed at an assumed £15 an hour including on-costs.
Today: single-order picking, visual check at packing.
- Walking per order: 3.0 minutes. Picking per line: 0.25 minutes.
- Picking time = 400 × (3.0 + 2.5 × 0.25) = 400 × 3.625 = 1,450 minutes (24.2 hours) a day.
- Mis-ship rate 1.0% = 4 orders a day, at an assumed £20 each in replacement, postage and handling = £80 a day.
Proposed: batches of 10 orders, scan-to-verify at packing.
- Walking per batch: 6 minutes, shared by 10 orders = 0.6 minutes per order.
- Picking per line: 0.25 minutes, plus 0.15 minutes per line to sort into order totes.
- Picking time = 400 × (0.6 + 0.625 + 0.375) = 400 × 1.6 = 640 minutes (10.7 hours) a day.
- Scan-to-verify adds 0.3 minutes per order at the bench = 120 minutes (2 hours) a day.
- Mis-ship rate falls to an assumed 0.2% = 0.8 orders a day = £16 a day.
| Today | Proposed | Change | |
|---|---|---|---|
| Picking hours a day | 24.2 | 10.7 | −13.5 |
| Extra verification hours | 0 | 2.0 | +2.0 |
| Net labour hours a day | −11.5 | ||
| Labour value at £15/hour | £172.50 | ||
| Mis-ship cost a day | £80 | £16 | −£64 |
| Daily value | £236.50 |
The labour figure is capacity, not cash. It becomes a saving only if paid hours actually fall, or if the same team handles growth without extra staff. Measure your own walking and picking times for a week before relying on any of these numbers; a stopwatch and 50 sample orders are enough to start.
When spreadsheets and paper pick lists stop working
Paper pick lists work for a few dozen orders a day from one channel. They struggle when:
- orders arrive from several channels and stock has to be reserved across all of them;
- pickers find empty bins because the list does not know what reserve stock was moved;
- short picks are scribbled on the sheet and never reach the stock figure;
- nobody can say, at 3pm, which orders are picked, packed or still waiting for the carrier.
At that point the pick list needs to come from a system that knows live stock by location and order status by step. Our guide to order fulfilment software explains the options, and the ecommerce order management process flow shows where pick and pack sits in the wider order journey.
FAQ
What is the difference between picking and packing?
Picking is collecting the ordered items from their storage locations. Packing is checking those items against the order, putting them in protective packaging, adding documents and labelling the parcel for the carrier.
What does a pick and pack warehouse operative do?
They pick items from bin locations using a list or handheld scanner, then verify, pack, weigh and label orders at a packing station. In smaller teams the same person does both; larger sites split the roles.
Which picking method should a small business use?
Usually single-order picking at first, because it is simple and errors are easy to trace. Move to batch picking when walking time is clearly larger than picking time and many orders share the same products.
How can I reduce pick and pack errors?
Give every bin a unique scannable label, use a barcode per variant, scan at the pick face and again at the packing bench, and hold any order with a short pick instead of packing it partly.
Does packaging EPR apply to my warehouse?
It may. GOV.UK lists packing goods as a packaging activity. You are an obligated producer if you handle more than 25 tonnes of packaging a year and turn over £1 million or more. Check the GOV.UK guidance for your circumstances.
Should I outsource pick and pack to a 3PL?
It depends on volume, space, peak swings and how much control you need over packing and service. Compare the 3PL’s full charges with your own labour, space and packaging costs on the same order profile.
How OpsMavix Can Help
OpsMavix builds owned, fixed-price operations systems for UK ecommerce brands and wholesalers that have outgrown spreadsheets but do not need a full ERP or a per-seat WMS. For pick and pack, that means orders released only when stock is available, pick lists sorted by location, scan checks at the pick face and the bench, and a live view of every order’s status from release to carrier.
See our ecommerce inventory automation, inventory automation system and wholesale order management system pages, or tell us how your pick and pack works today.
Sources
All reviewed 29 October 2026.
- HSE: Manual handling at work, the law
- GOV.UK: Extended producer responsibility for packaging, who is affected and what to do
- GOV.UK: Get your business ready for the Plastic Packaging Tax
The order volumes, times, rates and costs in the worked example are hypothetical. The cover is an OpsMavix graphic.
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