HVM Blocks Frequently Asked Questions

What's the difference between a CT Block, a Timber Seating CT Block, and a Planter CT Block?

ll three share the same PAS 68 tested concrete core and shallow mount installation. The difference is the attachment: a plain CT Block is a standalone security unit, a Timber Seating CT Block adds a hardwood seating surface, and a Planter CT Block adds space for planting - letting you choose the right balance of security and amenity for your site.

Which hostile vehicle mitigation blocks are recommended for pedestrian zones?
For busy pedestrian zones, Timber Seating CT Blocks or Planter CT Blocks are usually preferred, as they combine PAS 68 protection with functional street furniture rather than a purely defensive concrete unit.
Are there hostile vehicle mitigation blocks with aesthetic design options for city centres?
Yes. Planter CT Blocks and Timber Seating CT Blocks are designed for exactly this - city centre and retail environments where blending security into the streetscape matters as much as impact performance.
What are the differences between fixed and removable hostile vehicle mitigation blocks?

Root-fixed blocks are anchored via a shallow 100mm foundation for permanent installations, while surface mounted blocks require no fixings and can be repositioned - useful where flexibility, temporary deployment, or future relocation is a requirement.

Can I mix block types along the same perimeter run?
Yes. It's common to combine plain HVM CT Blocks with seating or planter variants along the same run, placing seating or planting where footfall and amenity matter most.
Can HVM blocks be customised for different environments?
Yes. Beyond the choice of CT, seating or planter variant, blocks are available in different profiles and in Premier Smooth or Exposed Aggregate finishes to suit heritage, retail, or public realm settings.
Where can I buy hostile vehicle mitigation blocks in the UK?
Townscape supplies PAS 68 tested HVM blocks direct to UK commercial, public sector and event clients, with technical support to help you specify the right configuration. Contact us for a quote.
How do I choose the right hostile vehicle mitigation blocks for my site?

Start with your risk assessment and footfall pattern: plain CT Blocks suit pure security applications, while seating or planter variants suit sites where the block will also be used or seen daily by staff, visitors or the public. Our team can advise based on your specific site.

What are the installation lead times for hostile vehicle mitigation blocks in commercial projects?
Lead times vary by product, quantity and finish. Because our blocks are shallow-mounted, on-site installation itself is faster than deep-mounted alternatives - get in touch for a project-specific timescale.
Are there rental or temporary options for hostile vehicle mitigation blocks?
Surface mounted configurations can support temporary and event-based deployments. For fully mobile, rapid-deployment requirements, see our Vehicle Attack Delay (VAD) range.
How to assess the security risk to determine the number of hostile vehicle mitigation blocks needed?
The number and configuration of blocks depends on your site's threat assessment, vehicle access points, and pedestrian flow. Our Bespoke Block Solutions team offers site survey and specification support to help determine this for your project.
How effective are hostile vehicle mitigation blocks against high-speed vehicle attacks?
Every block in our HVM Blocks range is PAS 68 tested and engineered to halt and immobilise a 7.5-tonne vehicle moving at speeds from 30mph to 40mph.
How to choose hostile vehicle mitigation blocks compliant with UK counter-terrorism standards?
Look for products independently tested to PAS 68, the UK's published standard for vehicle security barriers. All blocks across this range meet that standard regardless of whether you choose the plain, seating, or planter variant.
Do hostile vehicle mitigation blocks require deep groundworks or foundations?
No. Our shallow mount blocks need only a 100mm recess into the existing tarmac, concrete, or paved surface, avoiding costly excavation and interference with underground utilities.
What maintenance packages do suppliers offer for hostile vehicle mitigation blocks?
Visit our Operations & Maintenance page for details on inspection schedules and aftercare. Warranty terms are confirmed at point of order.
Who can help me decide which HVM blocks to specify?
Our technical team offers consultancy support for site assessment and specification - contact us directly for more information. 

HVM Block Selector

Description Size SKU Speed and Weight Rating* Available Finishes Shape Foundation Depth Height Above Ground
CT BLOCK 150 1490x990x600mm VED/0044 30 MPH 7500kg & 40 MPH 7500kg Premier Smooth or Exposed Rectangle with 15mm Chamfer to edges 100mm 500mm
CT BLOCK 125 1250x1250x600mm VED/0045125 30 MPH 7500kg & 40 MPH 7500kg Premier Smooth or Exposed Square with 15mm Chamfer to edges 100mm 500mm
CT BLOCK 150 APEX 1490x900x800mm VED/0007 30 MPH 7500kg & 40 MPH 7500kg Premier Smooth or Exposed Apex with 20mm Rounded edges 100mm 500mm
CT BLOCK 200 OFFSET 1990x990x600mm VED/0047 30 MPH 7500kg & 40 MPH 7500kg Premier Smooth or Exposed Rectangle with 15mm Chamfer to edges and offset ends 100mm 500mm
CT BLOCK 200 STADIUM 1990x990x600mm VED/0046 30 MPH 7500kg & 40 MPH 7500kg Premier Smooth or Exposed Rectangle with 15mm Chamfer to edges and rounded ends 100mm 500mm
CT BLOCK 225 2250x900x600mm VED/0044225 30 MPH 7500kg & 40 MPH 7500kg Premier Smooth or Exposed Rectangle with 15mm Chamfer to edges 100mm 500mm
CT BLOCK 320 3200x990x600mm VED/0044320 30 MPH 7500kg & 40 MPH 7500kg Premier Smooth or Exposed Rectangle with 15mm Chamfer to edges 100mm 500mm

 

*Three block scenario’s tested using the 1490x990x600mm block size.