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To reach our Trespass Response Team out of hours:
01405 455 018Vacant Property Services
01322 332211Temporary & Mobile CCTV
0370 770 6811Alarm Receiving Centre
0370 770 6811Fire & Security Systems
0121 561 1214Commercial Financial Recovery & Commercial Eviction Services
0800 002 9049To reach our Trespass Response Team out of hours:
01405 455 018


Clearway installs interlocking concrete blocks to secure construction sites, preventing unauthorised vehicle access and protecting perimeters.
Keeping a site secure isn’t easy when unauthorised vehicles, fly-tippers or shifting ground can compromise safety. Standard fencing or barriers often aren’t enough, and temporary fixes don’t hold up under pressure.
That’s where Clearway’s concrete interlocking blocks provide the strength you need, with heavy-duty, stackable units that lock firmly into place to prevent access, stabilise land, and create instant protective structures and storage bays.
Quick to deploy and simple to reposition, interlocking blocks give you a flexible, cost-effective way to build retaining walls, secure land, assets and construction sites without compromise.


Interlocking concrete blocks are heavy-duty, precast concrete units designed to be stacked both vertically and horizontally, creating robust barriers for site security.
Concrete interlocking blocks are a popular option due to their natural fire resistance, the weight of pre-cast concrete, and the flexibility of their configuration, making them suited to many applications.
They can be used as a storage bay for materials such as grit, salt, and sand or as a storage facility for waste or recycling.
Separating waste items or soil from the working areas of a site ensures safety and efficiency, and keeps waste products in a particular place until collection.
They can act as a fire break or a temporary containment area, either as an emergency shelter or to protect high-value assets and machinery.




Need an Urgent Flood Defence, Retaining Wall or Safety Barrier?
Get in touch today and we’ll offer independent advice about the right size and number of blocks, and organise delivery and assembly as quickly as possible.









We support clients across the UK and Europe, providing concrete barrier hire:





Construction Sites
Construction Sites
Construction teams regularly use versatile interlocking concrete blocks as a quick, cost-effective way to build retaining walls to shore up excavations, as ballast for stability, and as a way to ensure worker protection when working with unstable earth.

Vacant Properties and Landowners
Vacant Properties and Landowners
Businesses and owners managing open land and empty properties or sites erect interlocking blocks to secure their land or premises against trespassers and vehicles.

Events and Car Parks
Events and Car Parks
In traffic management, interlocking blocks are an efficient and fast way to build barriers and physical blockades to keep vehicles and pedestrians separate, or to guide traffic through designated routes during construction or repair work.

Logistics and Industrial Facilities
Logistics and Industrial Facilities
Concrete blocks are widely used in logistics projects, creating storage bays to securely hold aggregates and soil, or to segregate different materials such as recyclables and waste.

Transport and Infrastructure
Transport and Infrastructure
The size and weight of connected concrete blocks make them suitable for a wide range of temporary traffic controls, creating freestanding walls to prevent collisions or ensure there is a barrier between lanes.

Councils and Utilities
Councils and Utilities
Local councils and utility providers use the strength of interlocking concrete blocks to erect flood defences, especially during emergency flood risks, and to build public safety barriers that are strong and immovable.
Key Features

Features designed to give you peace of mind.
Pick From Various Interlocking Block Sizes With Urgent Deliveries Available
Interlocking concrete blocks come in a range of sizes, from 2 sections all the way up to 10 sections. 4, 6 and 8 section concrete blocks are the most popular sizes, but you may require different sizes depending on the nature of your project.
Choose a Cost-Effective Way to Build Flood Defences, Retaining Walls and Storage Bays
Quick to deploy and simple to reposition, our interlocking blocks give you a flexible, cost-effective way to secure land, assets and construction sites without compromise.
Hire Robust Interlocking Blocks Made From Premium Pre-Cast Concrete
Once stacked and secured, the blocks are impossible to move and can withstand water pressure and fire, acting as a barricade to control flood waters and preventing a fire from breaching a perimeter.
Select Your Duration of Hire for Short and Long-Term Projects
We can organise interlocking concrete block hire for any period, whether you need a temporary fire safety barrier or a long-term material storage bay.
Access Interlocking Blocks of All Weights and Strengths
Interlocking blocks can be configured into temporary barriers and retaining walls that prevent land slips on development sites, stabilise foundations during groundwork projects, and protect workers.
Ensure Your Site Is Fully Compliant With Insurance and Regulatory Conditions
Implementing the right measures to prevent flooding, intrusions, fires, and landslides is crucial, as it helps contractors and professionals adhere to all relevant requirements.
Our Process

Here’s what to expect from the process.
From Call to Hire, getting your blocks delivered is straightforward
Select the Size and Number of Blocks Required
Our security and safety specialists can help you calculate exactly how many blocks you need, whether to build a temporary storage bay, as a health and safety precaution, or to augment your fire protection
Schedule Delivery and Erection
We offer rapid nationwide delivery services and will erect your blocks in the structure, size and dimensions according to your specifications.
Advise if Changes Are Needed
If you need to relocate or change the layout, number or structure of your interlocking blocks, we can attend your site to reconfigure them as necessary.
Organise Interlocking Block Collection
Once your blocks are no longer required, our professional teams will be dispatched with the appropriate equipment to remove the blocks with minimal disruption.
How They Work

Fire Protection
Concrete blocks are fire resistant, owing to the concrete mix, the strength of solid concrete and the thickness of each individual block. They can act as a fire break or a temporary containment area, either as an emergency shelter or to protect high-value assets and machinery.
Storage Bays
Blocks can be erected as a storage bay for materials such as grit, salt, and sand or as a storage facility for waste or recycling. Separating waste items or soil from the working areas of a site ensures safety and efficiency, and keeps waste products in a particular place until collection.
Retaining Walls
Retaining walls are used on sites where there is a risk of land slippage or mudslides, which can potentially be extremely dangerous. Walls are also used to support recently dug foundations, keep materials in a designated space and prevent spillages in high winds or wet weather when soil and loose materials are more likely to move. The strength of concrete interlocking blocks also lends itself to ballast applications, with blocks erected as a counterweight to keep scaffolding and other structures secure.
Building freestanding walls
Our solutions can be used to build walls for floor barriers, traffic segregation and security barriers. They can also be used as a security solution in areas where you need to prevent unauthorised vehicle access. It’s quick and easy to section off an area with interlocking concrete blocks, and they are sturdy enough to withstand the impact of a car.


Interlocking concrete blocks are a versatile, high-strength solution suitable for a wide range of projects.
Durable and secure, they can be quickly deployed to create effective barriers and structures across different environments.
You have a development site or open land and have experienced intrusions, fly-tipping and trespassers. You need a reliable way to stop unverified vehicles from accessing your property, without the cost and time linked with 24/7 physical guarding.
You need a way to create a storage bay for bulk materials such as aggregates, soil or recyclables, but require this for a specific period during construction work.
You need a 100% reliable, robust solution to create a short-term retaining wall to stabilise the ground and ensure the earth is secure.
You’re facing increased flood risks, forecasts of very heavy rain, or flood warnings and need a fast way to ensure flooding doesn’t cause financial damage or health and safety concerns.
You want to protect assets like machinery, tools and equipment from any potential fire, without having a permanent structure or fire-safe refuge.
You must be able to keep cars, delivery vans, and people separate, whether around an event, a car park, a development zone, or a transport hub.
Clearway provides concrete interlocking blocks in various sizes and weights, and can recommend the right blocks depending on the purpose and the shape of the structure you’d like to construct on your site.



Fisher German LLP
July 2025
Great Service and Rapid Response
I have been using Clearway for over 5 years. One of the standout features of Clearway is their rapid response time.
Axis Europe
July 2025
Can’t Commend Them Enough
The guys were very polite, friendly and professional in their whole attitude. They worked very hard & did a great job!- Can’t commend them enough!
John Fisher S&C Slatter
July 2025
Huge Thanks
A huge amount of thanks goes to ‘Clearway’ for their exemplary conduct and unwavering commitment to the safety of my site management, site operatives and construction site.
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Reported Incidents
January – June 2025
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Incident Responses
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Police Response


Clearway is a long-serving security company, specialists in construction site security, perimeter, car park security, public space, highway and vacant property security.
Having partnered with authorities such as the emergency services, construction businesses and transport sites, we know the ins and outs of site security and pass on our extensive knowledge to each of our clients.
The stackable interlocking features of these concrete blocks are suited to countless applications, and our teams can attend your site to reposition, remove or add more blocks as construction work progresses or as work teams move on to new phases.
We offer a reliable and fast delivery service, so if you need interlocking concrete blocks in a hurry, don’t hesitate to get in touch. All of our blocks are BS EN 1317 certified, and our expert team can help you with installation if you need assistance.
This top-level accreditation ensures our service meets strict industry standards for reliability, data security, and incident response.
If you wish to construct a retaining wall, our engineers will discuss the size, weight, and position of the wall to ensure your selected blocks are suitable, recommending higher-density, heavier blocks where necessary to provide the right supportive strength. We offer inclusive delivery and erection services, with specialist listing equipment available depending on the size and structure needed and accessibility.
We have years of experience consulting with clients across the industries. If you require interlocking blocks to prevent travellers and trespassing, to block off rear entrances to your property, or need to improve safety compliance on a construction site, we can offer personalised recommendations about the right services or technology to augment the effectiveness of your existing safeguards.

Clearway supports diverse sectors requiring rapid security deployment. Our clients include construction companies, property developers, event organisers, and facility managers who need reliable surveillance solutions. We’re trusted by:




Our Commercial Sales Manager, Gideon Reichental, explains the scope and flexibility of our concrete barriers.
“Our solutions can be used to build walls for floor barriers, traffic segregation and security barriers. They can also be used as a security solution in areas where you need to prevent unauthorised vehicle access.
It’s quick and easy to section off an area with interlocking concrete blocks, and they are sturdy enough to withstand the impact of a car.“


LG8 Interlocking Concrete Blocks
Length 1600mm x width 800mm x height 800mm x weight 2,400 kg
LG6 Interlocking Concrete Blocks
Length 1200mm x width 800mm x height 800mm x weight 1,800 kg.
LG4 Interlocking Concrete Blocks
Length 800mm x width 800mm x height 800mm x weight 1,200 kg.
Tough Interlocking Pins
Robust interlocking pins ensure your concrete blocks cannot be moved, tampered with, or disconnected without specialist equipment.
Lifting Pins for Reconfiguration
If you need to move a retaining wall or barrier, we can arrange a convenient time to adapt your structure to your requirements.
High-Quality, Pre-Cast Concrete
Interlocking blocks are made from pre-cast concrete that can withstand extreme pressure, force, and weather conditions.
Versatile Stacking Options
Blocks can be stacked vertically or horizontally or laid out in a grid pattern to an array of heights, widths, and depths.


Explore our comprehensive guides covering installation, vacant property management and concrete block hire.


Read more about the companies, sites, buildings and properties we helped to secure.


Got a question about our concrete blocks? Read our frequently asked questions.
Interlocking blocks are used in numerous applications, and the best-suited blocks will vary with applications, with different considerations for retaining walls, flood defences or temporary vehicle barriers.
For example, a blockade to prevent vehicular access will normally need to be tougher than a material storage bay to ensure it can deter intentional trespassers. Clearway is happy to offer professional advice on your requirements.
Yes, we operate nationwide and can dispatch an installation team to move and reconfigure our concrete interlocking blocks as and when required. Just speak to one of the Clearway specialist team.
Interlocking concrete blocks are versatile and used for a variety of commercial applications. Their ease of assembly makes them appropriate for temporary or permanent walls, barriers, and partitions. Some common applications include flood defence, erosion control and the creation of storage bays and retaining walls.
The height to which you can stack interlocking concrete blocks varies depending on the specific block design, the purpose of the structure, and local regulations. For taller structures, additional engineering reinforcement may be necessary for increased stability and safety.
Breeze blocks, also known as cinder blocks, are a type of block made using a mix that includes coal cinders, giving them a lighter weight and more porous structure. In contrast, concrete blocks are made from a blend of cement, water, and aggregates like sand and gravel, resulting in a denser and stronger block. Concrete blocks are preferred for load-bearing walls and structural components due to their superior strength and durability.




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