Ever pictured building a solid wall or barrier without laying a single brick? That’s the beauty of interlocking concrete blocks. At 2 Brothers Concrete & Pumping, we supply robust, ready-made blocks that fit together like a puzzle – quick to install and built to last.
Whether you’re planning something temporary or more permanent, we’ve got the stock, the gear, and the know-how to get it to you, wherever you are in the UK. We handle the manufacturing ourselves at our Southampton site, so quality’s always in check.
So, what exactly are interlocking concrete blocks – and why are they so useful? Keep reading or for a free quote, give our team a call today on 01489 552737.
Reusable
Made to order
High quality
Nationwide delivery
Made in house
Durable and fire-resistant








Interlocking concrete blocks are large, heavy-duty blocks designed to slot securely into one another using a stepped or notched system built into their shape. Unlike traditional bricks or poured concrete, these blocks don’t need mortar to stay in place.
Each block is cast with specific connectors on the top and bottom, allowing them to interlock tightly when stacked. This system gives them added stability and makes them ideal for building solid structures quickly and efficiently.
They’re typically made from high-grade concrete, poured into moulds to ensure consistent shape and strength. The size and weight of each block varies depending on the intended use, but all are designed for heavy-duty performance.
Their uniform design makes stacking straightforward, with less room for error compared to more complex construction methods. At 2 Brothers Concrete & Pumping, we cast each block in-house to make sure they meet strict quality standards (BS8500) from the ground up.
Thanks to their strength and durability, concrete blocks can be used in a variety of ways across a range of industries. This includes:
Material and Vehicle Storage Bays
Blast Walls
Salt Stores
Crash Protection
Flood Protection
Push Walls
Security Barriers
Segregation Bays
Retaining Walls
Industrial Buildings
Fire Breaks
Culverts
Counterweights
Roadblocks
Yard Security
Traffic Management
Temporary Buildings
Sea Defences
Speak to one of our experts about your requirements and we will be happy to advise on what you might need.
Looking to improve the health and safety of your site? Interlocking concrete blocks are a great way to keep a site safe, as they let you create designated areas for dangerous equipment and vehicles to work away from foot traffic.


Our standard interlocking concrete blocks measure 1500mm x 600mm x 600mm, but we also offer a range of other sizes to suit different needs. If you’re unsure what will work best for your site, we’re happy to help. Just give us a call to discuss your project.
We can also carry out a site survey to determine the right block size and quantity; simply request one when you get in touch with our team.
Yes, you’re able to collect any concrete blocks ordered from our site in Botley, Southampton.
Yes, we can deliver our concrete blocks nationwide. Call us to get a quote for our delivery service.
With a tolerance of D1, our concrete blocks have a shear bond strength of 0.15N/mm2 and a compressive strength ranging from 3.6 to 30N/mm2. Get in touch with our team if you need any additional information about our concrete blocks.
Yes, standard concrete blocks can be used for building below a damp-proof course or below ground as a part of a foundation.
Concrete blocks don’t naturally decay unless they are subjected to direct water exposure, acidic environments, or continuous abrasion. This makes them exceptionally long-lasting.
Yes. The optimal way to insulate them will depend on the exposure levels surrounding the concrete block wall. Concrete block walls can be insulated using injection foam, spray foam, foam boards, polystyrene beads, or loose-fill masonry insulation.
Use our free calculator to estimate volume - then get in touch for a tailored quote and on-site delivery slot.
Estimates only. Final quote depends on access, mix specification and pour method.
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