Townscape's Hostile Vehicle Mitigation Blocks range gives you a PAS 68 certified way to prevent vehicle incursion into a zone around a building or secure area, without compromising pedestrian movement or the look of the space you're protecting. All blocks in the range are shallow mount and require only a 100mm recess into the adjacent tarmac, concrete or paved surface, avoiding costly groundwork and interference with underground utilities.
The range is available in three formats, so you can specify pure security, security with seating, or security with planting, depending on the site:
- Counter Terror (CT) Blocks - our core PAS 68 tested concrete blocks for perimeter protection
- Timber Seating CT Blocks - CT Blocks fitted with durable hardwood seating attachments
- Planter CT Blocks - CT Blocks combined with planting for a softer, greener perimeter
For temporary or event-based requirements, see our Vehicle Attack Delay (VAD) range, and for fully custom perimeter projects, our Bespoke Block Solutions team can help specify a custom configuration.
Which HVM Block Is Right for Your Site?
All three block types share the same PAS 68 tested core, so the right choice usually comes down to how the space around your perimeter is used day to day.
Counter Terror (CT) Blocks
Best where perimeter security is the sole priority - entrances, loading areas, and locations where a low-profile, purely functional block is preferred. View CT Blocks.
Timber Seating CT Blocks
Best for office campuses, public buildings, and areas with regular staff or visitor footfall, where the block can double as outdoor seating rather than standing as a purely defensive feature. View Seating CT Blocks.
Planter CT Blocks
Best for retail precincts, civic spaces, and heritage-sensitive locations, where a greener, more landscaped appearance is preferred over a visible concrete block. View Planter CT Blocks.
PAS 68 Tested, Shallow Mount Protection
Attaining a PAS 68 standard requires a security product to undergo thorough, comprehensive testing within a controlled setting, and a product is only awarded the standard if it meets stringent criteria and demonstrates sufficient impact resistance. Every block across our HVM Blocks range, whether plain, seating, or planter is engineered to halt and immobilise a 7.5-tonne vehicle moving at speeds from 30mph to 40mph.
Because the range is shallow mount, installation needs only a 100mm foundation rather than a deep footing, keeping disruption, cost and programme time to a minimum on live or sensitive sites.
Uninterrupted Pedestrian Movement
A typical requirement for a perimeter protection system is to prevent vehicle access while allowing uninterrupted pedestrian movement. Every block in this range facilitates the seamless passage of pedestrians, enhancing pedestrian traffic flow, ideal for bustling airports and popular tourist sites, as well as pedestrianised city and town centres, stadiums, government buildings, schools, and retail premises where footfall cannot be compromised.
Where Are HVM Blocks Used?
- Airports and transport hubs - securing frontages and drop-off zones
- Pedestrianised city and town centres - protecting high-footfall retail and public realm areas
- Stadiums and event venues - perimeter protection for large public gatherings
- Government and public buildings - meeting counter-terrorism protective security requirements
- Schools and educational institutions - discreet, low-profile perimeter protection
- Retail premises and shopping precincts - aesthetic HVM options that complement the streetscape
- Heritage and conservation areas - finishes designed to sit sensitively within historic settings
See a full list of where our HVM blocks can be used on our sectors page.
Specification & Custom Support
Every site's risk profile and footfall pattern is different. Our technical team can help you work out the right mix of CT, seating and planter blocks for your perimeter, and offer a fully custom service where a standard configuration doesn't fit. Visit our Operations & Maintenance page for aftercare guidance once your blocks are installed.

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HVM Blocks Frequently Asked Questions
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.
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.
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.



