Collection: Modular Building Block Kits
Build Your Vision with Modular Building Block Kits
Why settle for ordinary when extraordinary is just clicks away? Our modular building block kits transform ambitious garden dreams into weekend realities, without the sweat, skills, or hefty price tags of traditional construction.
Browse our complete range below or call 0333 772 3030 for expert guidance. Your perfect garden feature is just one phone call away.
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PolyBrick® Raised Beds
5.0 / 5.0
(7) 7 total reviews
Regular price From £50.00 GBPRegular priceUnit price / per£75.00 GBPSale price From £50.00 GBPPolyBrick® Raised Beds
Regular price From £50.00 GBPRegular priceUnit price / per£75.00 GBPSale price From £50.00 GBPPolyBrick® Raised Beds
Regular price From £50.00 GBPRegular priceUnit price / per£75.00 GBPSale price From £50.00 GBPSale -
PolyBrick® Garden Composters
5.0 / 5.0
(2) 2 total reviews
Regular price From £194.40 GBPRegular priceUnit price / per£220.00 GBPSale price From £194.40 GBPPolyBrick® Garden Composters
Regular price From £194.40 GBPRegular priceUnit price / per£220.00 GBPSale price From £194.40 GBPPolyBrick® Garden Composters
Regular price From £194.40 GBPRegular priceUnit price / per£220.00 GBPSale price From £194.40 GBPSale -
PolyBrick® Bespoke Above Ground Pond Kit
Regular price £0.90 GBPSale price £0.90 GBPUnit price / perPolyBrick® Bespoke Above Ground Pond Kit
Regular price £0.90 GBPSale price £0.90 GBPUnit price / perPolyBrick® Bespoke Above Ground Pond Kit
Regular price £0.90 GBPSale price £0.90 GBPUnit price / perSale -
PolyBrick® Bespoke Garden Composter Kit
5.0 / 5.0
(1) 1 total reviews
Regular price £0.90 GBPSale price £0.90 GBPUnit price / perPolyBrick® Bespoke Garden Composter Kit
Regular price £0.90 GBPSale price £0.90 GBPUnit price / perPolyBrick® Bespoke Garden Composter Kit
Regular price £0.90 GBPSale price £0.90 GBPUnit price / perSale -
PolyBrick® Bespoke Raised Bed Planter Kit
5.0 / 5.0
(1) 1 total reviews
Regular price £0.90 GBPSale price £0.90 GBPUnit price / perPolyBrick® Bespoke Raised Bed Planter Kit
Regular price £0.90 GBPSale price £0.90 GBPUnit price / perPolyBrick® Bespoke Raised Bed Planter Kit
Regular price £0.90 GBPSale price £0.90 GBPUnit price / perSale
No More Compromise, No More Waiting
Forget rotting timber that disappoints in two years.
Skip the backbreaking labour of concrete mixing.
Professional Results in Hours, Not Weeks
Whether you're creating stunning retaining walls that solve that troublesome slope, elegant planters that become garden focal points, or efficient composters that turn waste into garden gold - PolyBrick delivers professional results that last.
Built for Britain, Built to Last
Every block is crafted in the UK Midlands from 100% recycled materials, meaning your project protects both your garden and our planet. No trees felled, no quarries scarred - just brilliant engineering that clicks together without tools, mess, or expertise.
Your Design, Your Way
Our smart calculators let you design exactly what your space needs. Want something unique? No problem. Need trade quantities? We've got you covered. Every kit arrives ready to build, with everything perfectly calculated for your vision.
From Seasoned Landscapers to Weekend Warriors
Everyone achieves flawless results with our modular building block kits. No experience required, no tools needed, no disappointments.
Let customers speak for us
from 40 reviewsWell impressed with the quality of the product. Well made, strong and attractive. Easy to use. Will definitely be spending £300+ later this year when I can get access to the existing raised bed to replace and renovate.
I made my raised bed from these PolyBricks and I am absolutely thrilled with the results. I was able to hide the roots of the holly tree, which was previously in a rotten barrel and had grown through and into the ground. (See picture 2 and 3). I used a rubber mallet to tap the bricks together so they are nice and tight. It should last a lifetime unless I redesign the garden again! Of course, I can re-purpose these bricks if I choose to. I am now planning to buy some more and build a shed. Just need to decide what to use for the roof.
They seem very strong.Easy to assemble. Good looking end product
Appear to be well made and tough - going to look at painting them with acrylic paint to see if I can match the colour with the stone slabs I have
After a false start with a delivery issue (which was sorted quickly)
I managed to get hold of the samples. They are very well made, sturdy and dimensionally stable. I did experience some fitting issues placing some of the blocks together which appeared to be a tolerance dimension where the "double" block is ever so slightly tapered (deliberate or not - not sure). I have use some, what I would call undue, force to fit. But once in it proved solid and id not then come apart easily (Probably a good thing if your were constructing a wall or such like!.) On the whole I would say these blocks are very well made with three colours which should "weather down". I would like to use and will keep them in mind when I find a suitable application. Would like to see a job actually finished using them. I think the sample idea is brilliant.
This is the second time I have bought from this business and I am very happy with their products. The website is very helpful and customer services are excellent. The products are well made and easy to use at a competative price.
The poly brick sample quickly was well made and easy too use.
Thank you for the sample pack of bricks, they seem very strong, easy to use and ideal for a variety of garden uses. I may decide to make a raised bed for veg growing.
Good idea sending samples like that can see the possibilities of this product I just need to see if it will work the project I have in mind.
Hi. Looks a very good product and nice to know what is available although I don’t have a use for it at the moment but would happily use if a situation arises.
Excellent quality and easy to use, fully recommend the product.
Thank you, I will be measuring up for my first polybrick project this afternoon and hopefully put in an order later. Thanks.
One System, Endless Garden Solutions
Our modular building block kits work together as a complete garden ecosystem. Match your raised bed planters with coordinating retaining walls. Create stepped terraces that flow into pond surrounds. Design integrated seating that complements your composters.
Every kit uses the same building blocks - so everything matches perfectly and can be expanded or reconfigured whenever inspiration strikes.
Building a Better Future, One Block at a Time
British-made sustainability that performs better than traditional alternatives. Every PolyBrick® giant building block is made from 100% recycled polypropylene right here in the UK. By choosing our large lego blocks, you're not just building amazing structures - you're helping divert plastic waste from landfills and reducing demand for virgin materials.
Creative Ideas & Inspiration
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Building a Garden Chair
How Our MD Ted Built His Garden Chair in Just 1 Hour Even when you're the Managing Director of PolyBrick®, there's nothing quite like putting your own product to the...
Building a Garden Chair
How Our MD Ted Built His Garden Chair in Just 1 Hour Even when you're the Managing Director of PolyBrick®, there's nothing quite like putting your own product to the...
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Building a Tiered Herb Planter
Building a Two-Tier Herb Planter: Kevin's Kitchen Garden Success Story When Kevin from Norfolk decided to grow his own herbs, he faced a common problem - limited space and poor...
Building a Tiered Herb Planter
Building a Two-Tier Herb Planter: Kevin's Kitchen Garden Success Story When Kevin from Norfolk decided to grow his own herbs, he faced a common problem - limited space and poor...
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Building a Large Tree Planter
Replacing an Oak Barrel: Building a Large Tree Planter with PolyBrick® When Luna's beloved oak barrel planter finally gave up after years of faithful service, she faced a dilemma. Her...
Building a Large Tree Planter
Replacing an Oak Barrel: Building a Large Tree Planter with PolyBrick® When Luna's beloved oak barrel planter finally gave up after years of faithful service, she faced a dilemma. Her...
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Building a Garden Raised Bed
Take a look at this raised bed built by the IBRAN team. In less than an hour, the team at IBRAN assembled this massive three-sided raised bed area. The brief...
Building a Garden Raised Bed
Take a look at this raised bed built by the IBRAN team. In less than an hour, the team at IBRAN assembled this massive three-sided raised bed area. The brief...


