Independent Security Consultants · Since 2001

Define.Trusted partner of many leading private and public sector organisations. We specialise in security risk, threat and vulnerability analysis and security mitigation design for the built environment; providing support for the full security project timeline from definition, design through to delivery.

LPCB SABRE Licensed Company
Threat & Risk Assessment
Security Engineering & Design
ISO 9001 Quality Management
Cyber Essentials Certified Plus
BREEAM Accredited Professional
Achilles UVDB Silver Plus
Achilles UVDB Audited
Achilles UVDB Verified
Association of Security Consultants
United Nations Global Marketplace
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What we do

Three phases. One outcome.

From the first threat assessment to the final compliance audit, every Critec engagement follows the same disciplined arc — Define, Design, Deliver.

New · Critec 360

The security site, modelled to engineering grade.

Critec 360 brings drone-LiDAR, Gaussian splatting and engineered site plans together into one digital twin — measure it remotely, design CCTV coverage against the site's real geometry, and verify the build in augmented reality on site.

One capture, three registered layers

The measurement backbone

Drone & SLAM LiDAR

The photoreal surface

Gaussian splatting (3DGS)

The engineering frame

Engineered site plans

One survey-grade twin
Where we operate

National infrastructure. Public sector. Private enterprise.

Sector 01

National Infrastructure

Securing the systems the country runs on.

200Utility sites witness-tested
National Infrastructure
Recent workFull design and specification of counter-terrorism measures to a UK water processing facility.

Sector 02

Public Sector

Protecting people, places and the public realm.

4CCTV control rooms converged into one facility
Public Sector
Recent workFeasibility study for the convergence of four public-space CCTV control rooms into a single, modern command facility.

Sector 03

Private Sector

Reducing business, asset and reputational risk.

€1.2BnDatacentre security PM mandate
Private Sector
Recent workPackage management for the physical security elements of a €1.2 Bn datacentre construction programme.

Trusted by operators of the systems we all rely on

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What our clients say
A safe pair of hands — you manage the process from inception to delivery, providing innovations whilst ensuring time and money savings.

Humi Asif

Specialist Procurement Consultant

Major Events