Hostile Vehicle
Mitigation Engineering
Standards-based HVM strategy and barrier specification — designed to integrate with the site architecture and engineered to perform under the specific threat conditions your site faces.
HVM is an engineering problem. It is also a design problem. Both matter equally.
A vehicle barrier that stops a defined attack but dominates the building entrance, obstructs pedestrian flow, or signals hostility to every visitor has not solved the problem — it has traded one failure for another.
Effective HVM requires two things simultaneously: engineering that performs to a rated standard under the threat scenario it was designed for, and design integration that allows the building to function and read as intended. Neither is sufficient without the other — and achieving both requires an adviser with no interest in the procurement outcome.
We engage as the independent HVM consultant — leading the threat-informed strategy, specifying solutions, coordinating with your engineering team and overseeing installation and site acceptance testing.
"The most dangerous HVM advice comes from someone who has already decided what product to sell you. The specification should come first — and it should come from someone with no interest in the procurement outcome."
Swept Path Analysis — engineering precision that saves money
Most HVM specifications are built on conservative assumptions about vehicle approach angles, speeds, and impact geometry. The result is over-specified barriers — heavier, more expensive, and more visually intrusive than the threat actually requires. Swept path analysis replaces assumption with calculation.
By modelling the precise kinematic path of a threat vehicle — accounting for approach angle, vehicle dimensions, turning radius, speed at point of impact, and site geometry — we specify barriers to the actual performance level required rather than a worst-case estimate. The result is technically defensible, proportionate to the risk, and demonstrably more cost-efficient than standard conservative approaches.
Vehicle Dynamics Modelling
Proportionate Barrier Specification
Cost & Aesthetics Optimisation
Defensible Technical Record
Scope of Service
From the initial threat assessment that establishes whether HVM is warranted, through to barrier specification, design coordination, and on-site acceptance — carried out independently at every stage.
Threat & Consequence Assessment
Evaluation of vehicle-borne threat scenarios specific to your site — covering threat actor profiles, credible vehicle types, approach vectors, and the consequence of a successful vehicle attack at each potential impact point. This drives the performance criteria for every barrier specified, ensuring proportionality to the actual risk rather than a generic standard.
Standoff Distance & Site Geometry Analysis
Assessment of achievable standoff distances across the site — identifying where geometry constrains protection options and where standoff can be maximised through perimeter configuration, landscaping, or access road design. Standoff is the most cost-effective form of vehicle protection available; maximising it before specifying barriers consistently reduces both cost and visual impact.
Hostile Vehicle Barrier Specification
Specification of rated barrier solutions — fixed bollards, removable bollards, retractable systems, anti-ram gates, and surface-mounted or shallow-foundation options — selected on the basis of performance rating, site geometry, operational requirements, and aesthetic integration. All specifications are vendor-neutral and issued for competitive tender.
Landscape-Integrated HVM Design
Design of HVM measures that function as part of the landscape rather than as an obvious security overlay — using raised planters, water features, level changes, boulders, and other landscape elements to provide rated or supplementary vehicle protection whilst contributing positively to the public realm and the building's streetscape presence.
Structural & Civil Engineering Coordination
Coordination with the structural and civil engineer on foundation design, ground anchorage, utilities avoidance, and construction methodology — ensuring barrier installation is fully resolved within the wider civil works programme and that structural requirements are understood and accommodated from the earliest design stages.
Installation Oversight & Acceptance
Site attendance during installation to confirm construction methodology matches the specification — particularly anchorage depth, foundation dimensions, and correct product rating. Formal acceptance testing and sign-off documentation confirming the installed barriers perform to the specified standard and are operationally ready for handover.
Our Approach
A structured six-stage process from threat assessment to acceptance — each stage building directly on the last, and each output technically defensible in its own right.
Vehicle Threat Assessment
Definition of the credible vehicle threat scenarios for the site — characterising threat actors, vehicle types, approach vectors, and the impact points that inform performance requirements for every HVM measure. This establishes the technical basis against which all subsequent specifications are justified.
Site Geometry & Standoff Analysis
Assessment of the site plan, access road configuration, and surrounding public realm to determine achievable standoff distances at each potential impact point. Where standoff can be improved through design changes — road geometry, landscaping, or access routing — these recommendations are made before barrier specification begins, as standoff improvement is consistently more cost-effective than higher-rated barriers.
Swept Path Analysis & Performance Derivation
Kinematic modelling of the threat vehicle's approach path — calculating speed, angle, and impact energy at the point of engagement with the proposed barrier line. The output is the minimum barrier performance rating required at each location, derived from actual vehicle dynamics rather than conservative generic assumptions. This is the stage that most directly drives cost efficiency in the specification.
HVM Strategy & Barrier Specification
Development of the full HVM strategy — defining the protection hierarchy across the site, barrier types and ratings required at each location, operational requirements for removable and retractable elements, and the integration approach with landscape and architecture. All barrier specifications reference applicable international standards and are prepared for competitive tender on a vendor-neutral basis.
Design Coordination & Tender Support
Working with the structural and civil engineer to resolve foundation details, ground conditions, and utilities — and with the landscape architect to integrate HVM elements within the public realm scheme. Preparation of tender documentation, technical evaluation of contractor submissions, and support through to contractor appointment.
Installation Oversight & Acceptance
Site attendance during foundation and installation works to confirm construction details match the specification — particularly anchorage depth, foundation dimensions, and correct product rating. Formal acceptance testing and sign-off documentation confirming the installed barriers perform to the specified standard and are operationally ready for handover.
We Do Not Sell Products
The client funds our services, and we have no commercial ties to any barrier manufacturers or suppliers. For every product we recommend, we issue an independent performance brief to our Client to run competitive tender, ensuring that all bids are evaluated on an equal footing.
Specify First, Choose Later
We begin by defining the performance criteria—using a thorough threat assessment and a swept‑path analysis—to establish exactly what the system must achieve. Only after these requirements are set do we compare available products against them. This forward‑first approach is the only way to reach a balanced, defensible outcome
Embedded in the Design Team
We work hand‑in‑hand with architects, structural engineers, landscape architects, and civil engineers, embedding HVM considerations straight into the core of the building design. This way, sustainability isn’t an afterthought tacked on at the end—it’s built in from the start.
Environments We Work In
Vehicle threat is not sector-specific — but the design response must be. The HVM strategy appropriate for a Data Center campus differs fundamentally from the approach required at a luxury hotel entrance or a crowded public venue.
We bring sector-specific experience to each engagement — understanding the operational, aesthetic, and regulatory constraints that shape what is achievable in each context.
Crowded Places & Large Public Venues
Stadiums, arenas, exhibition centres, and event spaces — where temporary and permanent HVM must accommodate mass pedestrian ingress and egress whilst protecting against vehicle attack on crowds in approach routes and drop-off areas.
Luxury Hospitality & Mixed-Use
Environments where guest experience and brand positioning demand that security measures are invisible or indistinguishable from landscape design — requiring the highest standard of HVM design integration.
Critical National Infrastructure
Data centres, classified offices, Airport & transport infrastuctures, Energy & utility facilities — where vehicle attack could have consequences extending well beyond the site boundary, and where barrier performance must be specified to the highest credible threat.
Commercial High-Rise & Campuses
New-build and retrofit HVM for commercial developments — where the challenge is typically integrating effective vehicle protection into a public realm that needs to feel welcoming, open, and architecturally coherent.
Government Buildings & Embassies
High-consequence environments where HVM must meet defined government and diplomatic security standards, often within tight urban sites with limited standoff and strict aesthetic requirements imposed by planning authorities.
Transport Hubs & Public Spaces
High-footfall environments with complex vehicle and pedestrian interaction — where HVM must manage access for legitimate vehicles whilst providing crowd protection against vehicle-as-weapon scenarios across large and often irregular perimeters.
Commission independent HVM advice
Whether you are at early design stage, reviewing an existing installation, or preparing for a regulatory or insurer requirement — independent HVM advice starts with a clear understanding of the threat, not a product catalogue.
Initial conversations are obligation-free. We will discuss your site, the threat context, and what a scoped engagement would involve — before any commitment is made.