A good garden storage box does a lot more than tidy away the lawnmower cable. It keeps cushions dry through a wet British summer, stops the kids’ outdoor toys turning green, and gives you somewhere to lock up tools that don’t quite justify a full shed. You don’t need to spend a fortune, either – plenty of capable boxes sit under £100.
Every box below is available on Amazon UK, with capacities from a compact 190 litres up to a tall 320-litre upright. All are weather-resistant, and all typically sell for under £100 – check the live price in each product box, as prices move with the seasons.
Quick Picks
- Best all-rounder: Keter Marvel+ 270L
- Best budget pick: VonHaus 270L Garden Storage Box
- Best for cushions: Charles Bentley 270L Outdoor Storage Box
- Best compact: Christow 190L Waterproof Garden Storage Box
- Most secure: Outsunny 311L Galvanised Steel Storage Box
- Largest capacity: URBNLIVING 320L Large Cargo Storage Box
Quick Comparison at a Glance
|
Storage box |
Capacity |
Material |
Best for |
|
Keter Marvel+ 270L |
270 L |
Resin (wood effect) |
Best all-rounder |
|
VonHaus 270L |
270 L |
Polypropylene |
Best budget pick |
|
Charles Bentley 270L |
270 L |
Polypropylene |
Best for cushions |
|
Christow 190L |
190 L |
Polypropylene + aluminium hinges |
Best compact |
|
Outsunny 311L |
311 L |
Galvanised steel |
Most secure |
|
URBNLIVING 320L Cargo |
320 L |
Heavy-duty plastic |
Largest capacity |
Compare live prices and ratings:
What to Look For in a Garden Storage Box Under £100
At this price you can get a box that lasts five years or more, but cheap boxes fail in predictable ways. Once you know what to check, it’s easy to avoid the duds.
Capacity
As a rule of thumb, 190–270 litres takes a couple of seat cushions, a few hand tools and a watering can. Above 300 litres, a box starts to work as a proper outdoor utility chest – BBQ kit, garden games and bulky toys. Measure your space first, particularly the height.
Material
Resin and heavy-duty polypropylene handle UK weather well – they don’t rust or rot, and decent ones have UV inhibitors so the colour doesn’t go chalky after a couple of summers. Galvanised steel is tougher and more secure, but check the coating at the edges and hinges.
Hinges
Hinges are the most common failure point. Thin plastic hinges can snap after a winter or two; metal or aluminium sliding hinges and gas-strut lid supports make a real difference.
Weatherproof vs waterproof
Most plastic boxes are showerproof but can let a little water in at the lid seam in driving rain. Keep anything that must stay bone dry in a sealed bag inside.
The Best Garden Storage Boxes Under £100 UK 2026
1. Keter Marvel+ 270L – Best All-Rounder
Capacity: 270 L | Material: Resin, graphite wood effect | Best for: Cushions, tools and extra patio seating
If you only look at one box on this list, make it the Keter Marvel+. It offers 270 litres of usable space in a wood-effect resin finish that holds up well in the UK sun, and the lid is strong enough to double as extra seating – Keter’s best-known selling point for this model.
Keter is one of the biggest names in resin garden storage, and the Marvel+ is one of the most widely stocked boxes in the UK. Built-in handles make it easy to move around the patio. It doesn’t come with a padlock, but the lid can be locked with one of your own.
Pros
- Solid build from a leading brand
- Lid doubles as garden seating
- Attractive wood-effect finish
- Widely available
Cons
- Padlock not included
- Some colourways sell out quickly
2. VonHaus 270L Garden Storage Box – Best Budget Pick
Capacity: 270 L | Material: Weatherproof polypropylene | Best for: Maximum space for minimum spend
The VonHaus 270L gives you the same capacity as the Keter Marvel+ for less money. You get weatherproof plastic construction, a lockable lid, sliding bar hinges and twin carry handles – everything you need, without the frills.
The sliding bar hinges are the real win: they’re sturdier than the basic plastic hinges on many similarly priced boxes and help keep the lid lined up over time. Assembly is quick. Where it loses ground to the Keter is the lid, which is lighter and not designed to be sat on.
Pros
- Excellent value for 270 litres
- Sliding bar hinges
- Lockable lid
- Quick, easy assembly
Cons
- Lid not strong enough for seating
- Slightly thinner panels than the Keter
3. Charles Bentley 270L Outdoor Storage Box – Best for Cushions
Capacity: 270 L | Size: 109 x 54.7 x 51.3 cm | Best for: Chunky seat cushions, blankets and throws
Charles Bentley has built a name in UK garden furniture for sensible, well-priced kit, and this 270L box fits the brief. At 54.7cm deep, it gives bulky seat cushions, blankets and throws plenty of room without having to squash them in.
The grey body and black lid look smart and practical, moulded handles make it easy to move, and sliding lid lifts help hold the lid steady as you open it. There’s a padlock hasp too, so you can lock it with your own padlock.
Pros
- Generous depth for bulky cushions
- Padlock hasp for security
- Moulded carry handles
Cons
- Plainer styling than the Keter
- Lid not designed for sitting on
4. Christow 190L Waterproof Garden Storage Box – Best Compact Pick
Capacity: 190 L | Size: L96 x W45.7 x H49.3 cm | Best for: Small patios, balconies and back-door storage
Not everyone needs 270 litres. If you have a small patio or balcony, or you just want something by the back door for tools and gloves, the Christow 190L is a great fit. At under a metre long and just over 45cm deep, it slides into spaces bigger boxes won’t.
Christow has put the money into the parts that matter. The hinges are aluminium sliding hinges rather than plastic, the lid is lockable, and the wood-grain finish looks convincing from a few steps back. There’s room for a couple of cushions and some small tools.
Pros
- Compact footprint
- Aluminium sliding hinges
- Lockable lid
- Smart wood-grain effect
Cons
- Not big enough to be your only storage box
5. Outsunny 311L Galvanised Steel Storage Box – Most Secure
Capacity: 311 L | Material: Galvanised steel, dark grey | Best for: Tools and anything worth locking away
If you want something more secure than plastic without jumping to a full shed, Outsunny’s 311L galvanised steel box is the standout option. A steel body is far harder to force than a plastic one, and the lid is lockable.
Gas rods support the lid, so it opens smoothly and won’t slam down on your hands. Galvanised steel resists rust far better than plain painted steel. Two things to bear in mind: metal boxes heat up in direct summer sun, and it’s worth touching up any chips with exterior metal paint before rust gets a foothold.
Pros
- Much more secure than plastic
- Gas-rod supported lid
- Generous 311L capacity
- Lockable
Cons
- Heats up in strong sun
- Chips need touching up to prevent rust
- Heavier than plastic boxes
6. URBNLIVING 320L Large Cargo Storage Box – Largest Capacity
Capacity: 320 L | Style: Tall upright box on rollers | Best for: Long-handled tools, garden games and bulky kit
If you need the most space for your money, the URBNLIVING 320L Cargo box is a different shape from everything else here. It stands upright, around the height of a wheelie bin, so it takes up far less patio space than a long, low chest of the same capacity – and it’s ideal for long-handled tools like rakes, spades and brooms.
It’s made from heavy-duty weatherproof plastic with a hinged, lockable lid, and two rollers let you tip it and wheel it around like a bin. The black ribbed finish is designed to resist fading.
Pros
- Largest capacity on this list
- Small footprint for its size
- Takes long-handled tools
- Lockable, with rollers
Cons
- Tall shape makes small items harder to reach
- Can’t double as a seat
How to Choose the Right Box for Your Garden
For cushions, the Keter Marvel+ or Charles Bentley 270L are both excellent – the Keter wins on looks and seating, the Charles Bentley on depth. For a small patio or balcony, the Christow 190L is the right size. If security is your top concern, the Outsunny steel box is in a different league to plastic. For long tools and maximum capacity on a small footprint, go for the URBNLIVING 320L. For value alone, the VonHaus 270L is hard to beat.
Where to Place Your Storage Box
Plastic storage boxes last longest on a flat, well-drained surface – paving, concrete or decking is ideal. On grass or soil, the base tends to sink unevenly over a year or two, which can warp the lid seal. If you have no choice, lay a couple of paving slabs first; it adds 15 minutes to the job and years to the box’s life.
Position the box so the lid opens away from the prevailing wind, and leave enough clearance above – the open height is often 30–40cm more than the closed height on the spec sheet.
Garden Storage Box FAQs
Are plastic garden storage boxes waterproof?
Most reputable plastic boxes are weatherproof rather than fully waterproof. They keep contents dry in normal rain, but in heavy driving rain a small amount of water can get past the lid seam. Store anything that must stay dry in a sealed bag inside the box.
Do I need to anchor my storage box?
Once it’s loaded with cushions and tools, a plastic box is usually stable enough not to blow over in normal UK weather. In a very exposed garden, fix it to a paving slab or decking. The steel Outsunny is heavy enough on its own.
Can I use a garden storage box as a seat?
Only some. The Keter Marvel+ is designed to double as seating; most of the other boxes here aren’t. If you want a box you can sit on, choose the Keter – and add a cushion, as the resin lid is hard.
How long should a sub-£100 garden storage box last?
Five years or more is a reasonable expectation, provided it sits on a flat surface and you don’t routinely overload the lid. Hinges usually fail first on cheaper boxes, which is why we favour metal or aluminium hinges.
Final Verdict
For the best balance of build, capacity and style under £100, the Keter Marvel+ 270L is our overall winner. If you’d rather save a little, the VonHaus 270L is the smart budget alternative. For small spaces, go Christow 190L; for serious security, the Outsunny 311L; and for the most space on the smallest footprint, the URBNLIVING 320L Cargo.
If you’ve got more to store, compare these boxes with our Best Garden Shed UK 2026 guide and our Best Outdoor Storage Bench UK 2026 round-up before you decide.
