Filling a shipping container is one of the most cost-effective ways to buy UK fast moving consumer goods for export. Freight is charged largely by the box, not by how much you put inside it, so the closer you get to a full, well-planned load, the lower your landed cost per unit becomes. For retailers and distributors in Africa, the Gulf, the Caribbean and beyond, a properly built mixed container is the difference between a healthy margin and a shipment that barely washes its face.

The challenge is that FMCG is bulky, varied and price sensitive. A container that is stacked badly, weighted wrongly or loaded with the wrong ratio of products can arrive damaged, tie up cash in slow sellers, or breach weight limits and rack up demurrage. Getting the plan right before a single pallet is picked is what separates experienced importers from first timers.

This guide walks through how to plan and fill a shipping container with UK FMCG, from choosing the right container and understanding weight and volume limits, through building a balanced product mix, to loading order, documentation and working with the right supplier.

Choosing the right container for your load

Most FMCG mixed loads travel in one of two standard dry containers. The 20ft container holds roughly 28 to 33 cubic metres of usable space and takes around 10 to 11 standard UK pallets, with a typical payload limit of about 21 to 28 tonnes depending on the shipping line and route. The 40ft container roughly doubles the volume at around 58 to 67 cubic metres and takes 20 to 24 pallets, but the payload limit does not double, so weight becomes the constraint long before space does.

The right choice depends on whether your load is volume heavy or weight heavy. Light, bulky lines such as kitchen roll, nappies, air fresheners and empty-feeling personal care items fill the cube quickly and rarely trouble the weight limit, which makes a 40ft the natural home for them. Dense lines such as liquid detergents, canned drinks, bottled toiletries and glass fragrances hit the weight ceiling fast, so a 20ft is often the smarter box for a heavy mix. Many exporters land on a 40ft container with a deliberate blend of heavy and light goods so that both the cube and the weight fill up at roughly the same time.

Understanding weight versus volume

Every container has two ceilings, and you hit whichever comes first. The volumetric ceiling is how much physical space you have. The weight ceiling, or payload, is the maximum cargo weight the line and the road haulier will accept, which is usually stricter than the container's theoretical maximum because of road legal axle limits at both ends.

The goal is to reach both ceilings together. A container that is full to the roof but only two thirds of its weight limit is wasting paid-for capacity, and one that is at maximum weight with visible empty space above the load is leaving cube on the table. To plan this, work in two columns for every product: its cubic volume per case and its gross weight per case. Then build the load so the running totals approach both limits in step. As a rule of thumb:

• Heavy liquids and cans should sit at the bottom and account for the bulk of your tonnage.
• Light, bulky dry goods go on top and use up the remaining cube without adding much weight.
• Keep a buffer of a tonne or so below the stated payload limit to allow for pallet weight, packaging and any moisture the cardboard picks up in transit.

Building a balanced product mix

A mixed FMCG load works best when it reflects what actually sells through in your market, not simply what is cheapest to buy. The most resilient containers are built around a core of proven, fast turning lines with a smaller allocation given to seasonal or trial products. This is where working from a supplier's best selling ranges pays off, because those lines carry the least risk of sitting unsold on arrival.

A typical balanced container for a general FMCG importer might allocate space along these lines:

• Household cleaning and laundry, such as bleach, surface sprays, washing up liquid and detergent, which are everyday repeat purchases in almost every market.
• Toiletries and personal care, including shower gel, soap, deodorant, oral care and wipes.
• Hair care, covering shampoo, conditioner and styling products across value and premium tiers.
• Air care and home fragrance, from aerosol air fresheners to candles and wax melts.
• Recognised branded goods that build trust and footfall, balanced against own-label lines that protect margin.

The branded portion of the load matters more than many first-time importers expect. Shoppers gravitate to names they know, so carrying a proportion of established branded FMCG lines alongside value alternatives gives your customers a reason to choose your shipment over a cheaper but unfamiliar one. Own brands such as Max Flush, Perfect Scents, Lu Mist and Eight Triple Eight, sitting next to stocked names like Yankee and Febreze, let you offer both recognition and a stronger margin within the same container.

Margins and the economics of a full load

The commercial logic of container buying rests on spreading fixed costs across as many saleable units as possible. Ocean freight, haulage at both ends, customs clearance and documentation are broadly fixed whether the box is half full or packed to the door. Every extra case you add lowers the freight cost carried by each unit, which is why a disciplined, full load beats a series of small, part-filled orders.

When you model the numbers, work backwards from the retail price in your destination market. Take the landed cost per unit, which is the ex-works price plus its share of freight, duty, insurance and inland transport, and compare it against local shelf prices for the same or similar goods. Lines that hold a comfortable gap between landed cost and local retail are the ones to weight your container towards. Fast turning value goods often carry slimmer percentage margins but sell in volume, while branded and premium lines carry more cash margin per unit. A blend of both keeps cash flowing and profit healthy.

Loading order and protecting the goods

How a container is loaded is as important as what goes into it. A well-built load arrives intact, clears inspection cleanly and unloads quickly. A poorly built one shifts in transit, crushes lower cases and can even make the container unsafe to open. Keep these principles in mind:

• Load heaviest pallets first and lowest, spreading weight evenly across the floor so no single axle is overloaded during road transport.
• Distribute weight from side to side and front to back so the container is balanced, which matters for both road safety and crane handling at the port.
• Avoid leaving voids. Loose gaps let pallets shift and topple, so fill spaces with lighter cases or dunnage.
• Keep liquids and anything that could leak away from absorbent or high-value dry goods, ideally lower in the stack.
• Protect against condensation. Containers sweat as they cross climate zones, so consider desiccant bags and ensure cardboard is dry before loading.

Pallets give you speed and protection but eat into your cube and add weight, so some exporters floor-load lighter cartons by hand to squeeze in extra volume. This is more labour intensive and slower to unload, so it is a trade-off worth discussing with your supplier before the load is built.

Documentation and compliance

A container is only as good as its paperwork. Missing or inconsistent documents are the most common cause of goods being held at the destination port, and demurrage charges mount quickly. At a minimum, a UK FMCG export shipment will usually need a commercial invoice, a packing list that matches the physical load case for case, a bill of lading from the shipping line, and where a preferential trade agreement applies, a certificate of origin or movement certificate such as an EUR1.

Accuracy is everything. The values, quantities and product descriptions on the invoice and packing list must agree with what is physically in the box, because customs at both ends will check. It helps to confirm early which certificates your destination requires, whether any goods need specific labelling or ingredient declarations, and whether aerosols or flammable items in your air care and fragrance lines trigger any dangerous goods handling requirements. A supplier experienced in export can flag most of this before it becomes a problem.

Choosing the right supplier for container loads

Filling a container well is far easier with a supplier who does it regularly. The right partner will hold a broad enough range that you can build a complete mixed load from a single source, which simplifies consolidation, paperwork and payment. Look for a supplier who can advise on the weight and volume of individual lines, who understands export documentation, and who can flex case quantities so you can fine-tune the load to hit both ceilings at once.

Range depth is the quality that matters most for mixed loads. Sourcing household, toiletries, hair care, air care, fragrance and branded goods from one place means a single delivery to the container, one invoice and one packing list, rather than the risk and cost of consolidating from several wholesalers. A supplier that combines its own brands with recognised names also lets you tune the balance of margin and recognition inside a single box, which is exactly the flexibility a profitable container needs.

Planning your first mixed container or looking to tighten up the one you already run? Talk to the NMS team about building a balanced, fully optimised FMCG container load, from product mix and margins to export paperwork, all from a single UK supplier.