20ft Shipping Containers for Sale UK

A 20ft shipping container is the standard choice for many UK storage and transport jobs. It gives useful capacity without taking over a whole yard, driveway, compound or loading area. For builders, retailers, farms, workshops and homeowners, it often strikes the right balance between space, security and ease of delivery.

Acorn Containers can help you choose a 20ft unit for sale or, where a temporary option suits the job better, compare it with 20ft container hire. The right answer depends on how long you need the container, what you plan to store, how visible the unit will be and what access is available for delivery.

Why a 20ft container suits many UK sites

A standard 20ft ISO steel container gives a strong enclosed space in a compact footprint. It is commonly used for tools, stock, materials, archive boxes, household items, agricultural equipment and general commercial storage. It can also be suitable for export when the condition, certification and acceptance requirements match the shipping line or freight operator’s needs.

The size works well where a 40ft container would be too long for the site or awkward to turn into position. A 20ft unit still needs proper delivery access, but it is easier to accommodate in many yards, car parks and construction compounds than a larger container.

• Useful storage space: The standard external length is 6.058 m, with around 33.2 m³ of internal volume.
• Steel construction: Corrugated Cor-Ten steel walls help the container resist weather and general site wear.
• Timber floor: A 28 mm marine-grade plywood floor on steel crossmembers supports many normal storage loads.
• End loading: Double doors at one end give wide access for pallets, tools and boxed goods.
• Flexible use: A 20ft unit can be used for short-term storage, long-term ownership or export where suitable.

For a larger footprint, compare the 40ft shipping container for sale. For cargo that needs top loading rather than end loading, see 20ft open-top container sales.

20ft shipping container dimensions

Always check both the internal dimensions and the door opening. The full internal space is not the same as the opening you load through, so tall machinery, wide pallets or bulky equipment may fit inside the box but still fail at the door frame.

Some customers need more height rather than more floor space. A 20ft high cube container may be worth asking about where tall equipment, racking or awkward items need extra headroom. Standard high cube units are 2.89 m, or 9 ft 6 in, high externally.

For broader size comparisons, use the container dimensions guide before ordering.

Buying or hiring a 20ft container

Buying is usually the cleaner choice when the container will become part of your site setup, storage system or export plan. You own the unit, so you can keep it as long as needed, move it later and consider modifications, subject to suitability and any planning or site restrictions.

Hiring suits temporary work. It is often used for construction phases, refurbishments, seasonal stock, events, short-term overflow and jobs with a known end date. You avoid owning an asset you may not need later, but you must look after the hired unit, keep it accessible for collection and check what changes are allowed before adding fittings or altering the container.

Modification plans can affect the decision. Personnel doors, windows, lining, insulation, electrics, shelving and repainting are usually easier to plan on a purchased unit. Hired containers normally have tighter limits because the container must be returned in the agreed condition.

To compare the wider cost factors behind each route, read the container purchase or hire guide.

Condition grades and what they mean

Condition affects appearance, service life, export suitability and cost. The main mistake is treating a grade as a promise without checking what the unit is needed for. A container used for secure yard storage does not always need the same grade as one going back into international freight.

One-trip containers

A one-trip container is usually sold as new because it has made a single cargo journey into the UK after manufacture overseas. It should generally have cleaner paintwork, a tidier floor, easier door operation and fewer dents than older used units, but it still needs checking because it has been handled, shipped and transported.

Used wind and watertight containers

Wind and watertight, often shortened to WWT, means the container is intended to keep wind and rain out when the doors, seals, roof and walls are sound. Used WWT containers can show dents, scratches, surface rust, repairs and signs of previous shipping work. For many storage jobs, that cosmetic wear is acceptable if the box is dry, secure and structurally suitable.

Cargo-worthy, IICL and CSC-plated units

Cargo-worthy containers are assessed for freight use, but carrier acceptance can still depend on inspection, age, repairs, route and documentation. IICL is a stricter inspection standard often linked with leasing fleets. A CSC plate is a safety approval plate fixed to the container and is relevant for international transport. If the container is for export, check current CSC status with the supplier and confirm acceptance with your freight forwarder or shipping line before loading.

The shipping container condition guide gives more detail on how grades are commonly described.

Delivery access and HIAB placement

Most 20ft containers are delivered on a lorry with a hydraulic crane, often called a HIAB. The lorry must reach the site safely, deploy stabiliser legs and place the container within the crane’s working reach. Access checks should come before delivery is arranged, not after the vehicle arrives.

Measure the entrance, the route into the site and the space where the vehicle will stand. Tell the supplier about narrow lanes, weak bridges, tight bends, parked cars, overhanging trees, cables, sloping ground, soft verges, low branches, restricted hours and any need to reverse from a public road. Photos and a simple sketch can save time.

• Check gate width and make sure the route is clear for a large delivery vehicle.
• Allow turning and reversing space, not just space for the container itself.
• Keep the drop area clear of cars, plant, skips, materials and overhead obstructions.
• Use firm, level ground such as concrete, tarmac or well-compacted hardcore where possible.
• Decide door orientation before delivery so the container is placed the right way round.
• Keep collection access open if the unit is hired or may need moving later.

Soft or uneven ground can cause the container to settle and twist. If the frame racks out of square, the doors may become hard to open or the seals may not sit properly. Support the four corner castings on level concrete pads, paving slabs or suitable timbers, and leave airflow under the floor where possible.

For more detail on vehicle access and offloading, see HIAB container delivery.

Security, storage and condensation

A 20ft steel container gives a strong storage shell, but good security still depends on how it is used. A lockbox helps protect the padlock area from attack. Door locking bars, seals and hinges should move properly, and the container should be placed where it can be seen, lit and monitored if valuable goods are inside.

Condensation is another common issue. It usually forms when warm, moist air meets cold steel surfaces. Damp pallets, wet timber, unsealed liquids and poor airflow all add moisture inside the container. Once the doors are closed, that moisture can settle on the roof, walls, floor and stored goods.

• Do not load wet goods unless the container is designed and managed for that use.
• Lift boxes and stock off the floor on pallets to improve airflow.
• Keep vents clear and avoid packing goods tight against the walls.
• Use desiccants for moisture-sensitive goods where appropriate.
• Consider lining or insulation where temperature change could damage the contents.
• Check the roof, door seals and floor before storing items that are easily damaged.

For tools and site kit, shelving or racking can keep items off the floor and make daily access easier. Heavy loads should be spread sensibly, and forklifts or pallet trucks should only be used where the floor, ground and loading method are suitable.

You may also find the guides to shipping container security and racking for shipping containers useful when planning the layout.

Export and compliance checks

A 20ft container can be used for export when the unit, cargo and paperwork meet the requirements of the shipping line, freight forwarder, customs agent and destination country. Do not assume that any used storage container can be loaded and shipped. CSC status, structural condition, door operation, floor condition and previous repairs can all affect acceptance.

Exporters should check verified gross mass requirements, cargo weight, packing method, insurance, customs declarations, tax treatment, prohibited goods and liability before the container leaves site. Incoterms 2020 can define where risk and responsibility transfer between buyer and seller, but they must be used correctly in the sales contract and shipping arrangements.

This page does not replace professional freight, customs, tax, legal or insurance advice. Check requirements with the relevant authority, freight forwarder, customs agent, shipping line, insurer or adviser before dispatch. For contract terminology, see the Acorn guide to Incoterms for container transport.

Planning and site permissions

Planning rules for containers depend on the use, location, duration, site status and the work involved. A container used briefly for storage during a project may be treated differently from a permanent commercial installation, a modified office, a public-facing unit or a container placed near neighbouring property.

Check the position, visual impact, access, drainage, change of use, listed status, conservation area restrictions and any lease or landlord terms before committing to placement. Local policy can vary, so contact the relevant local planning authority where there is any doubt.

The container planning guidance explains the main issues to think through before placing or modifying a container.

How to order a 20ft container

Start with the job, not the container. Decide what you need to store, how long the unit is needed, how often it will be opened, whether it may be moved later and whether it needs to look clean and presentable to customers or the public.

1. Choose purchase or hire based on the expected duration and future use.
2. Check that a 20ft unit gives enough internal length, width, height and door opening.
3. Select a suitable condition grade for storage, appearance or export.
4. Measure site access, turning space, overhead clearance and the drop area.
5. Prepare level supports under the four corner castings.
6. Confirm door orientation and collection access before the lorry arrives.
7. Inspect the doors, seals, floor and general condition before loading.

When you know the size, condition and access details, send those notes with your postcode and any site photos so the delivery method can be checked. You can also make a container price enquiry for a 20ft shipping container for sale in the UK.