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Security advisory &
risk assessment
Independent physical security audit, risk assessment, and advisory for corporate, commercial, residential, and maritime environments.
Security decisions are only as good as the information they are built on. Understanding where you are exposed, and where you are not, is the foundation of any credible security programme.
Grey Prism conducts physical security audits and risk assessments across corporate, commercial, residential, and maritime environments. We evaluate what is in place, how well it works, and where the gaps are. The result is a clear set of recommendations designed to support confident decision-making and translate into practical action.
clients
Who we work with
Corporate Leadership Teams
Corporate leadership and facilities teams responsible for the security of offices, headquarters, data centres, and multi-site portfolios.
Private Estates
Private estates and residential principals seeking an independent assessment of their homes, grounds, and household security, with clear recommendations on what to do next.
Maritime Clients
Maritime clients responsible for the security of yachts, superyachts, and associated shoreside operations. This includes crew readiness, port security, and voyage risk.
Venues and Event Operators
Venues and event operators preparing for their obligations under Martyn's Law.
Law Firms and Family Offices
Law firms and family offices commissioning security reviews on behalf of clients.
insight
Martyn's Law readiness
The Terrorism (Protection of Premises) Act 2025, commonly known as Martyn's Law, received Royal Assent in April 2025. It is not yet in force, with an implementation period of at least 24 months, and is expected to commence during 2027. The Act introduces new obligations for premises and events where 200 or more people may be present.
Grey Prism supports organisations in understanding whether they fall within scope, assessing current preparedness, and developing the procedures, documentation, and staff readiness the Act will require.
Grey Prism supports organisations in understanding whether they fall within scope, assessing current preparedness, and developing the procedures, documentation, and staff readiness the Act will require.
Insight
Understanding Martyn's Law — what it means for your premises
read more
Security Assessment
What a security assessment delivers
Every engagement is scoped to your environment, your threat profile, and your risk appetite. Depending on the scope, this may include:
How it works
How an engagement works
01
Initial consultation.
A confidential conversation to understand your concerns, your environment, and the level of assurance you need.
02
Threat and risk assessment.
Before any physical audit begins, we assess the threat landscape relevant to your premises, your sector, and your profile.
03
On-site security audit.
A structured assessment of your physical environment, security infrastructure, procedures, and personnel.
04
Analysis and reporting.
A written report containing findings, assessed risk levels, and prioritised recommendations.
05
Implementation and follow-up.
Where required, we oversee the implementation of recommended enhancements and provide ongoing advisory support.
why grey prism
Grey Prism combines strategic advisory, intelligence capability, and discreet operational support to help organisations manage risk with clarity and confidence.
Operational Experience
Grey Prism's team brings extensive operational experience drawn from UK Special Forces, UK military intelligence organisations, and specialist police units. Our assessments are informed by what we have seen work under pressure.
Independent and Vendor-Neutral
Our recommendations are based on what your environment needs. Where implementation is required, we oversee it on your behalf.
Certified and Auditable
Grey Prism holds ISO 9001 certification, Cyber Essentials certification, and is an Armed Forces Covenant signatory.
Integrated Capability
Grey Prism operates across TSCM, counter-drone advisory, protective security, crisis response, and intelligence. If a security audit reveals a broader threat picture, we advise across it.
Discreet and Proportionate
Every engagement is designed to minimise disruption. We work around your operations, your people, and your schedule.
FAQs
Frequently asked
questions
What is the difference between a security audit and a risk assessment?
A security audit evaluates what is currently in place. A risk assessment looks at the threats you face and how vulnerable you are to them. We typically do both, because recommendations need to be grounded in the threat picture as well as the current state of your security.
How long does an assessment take?
It depends on the size and complexity of the environment. A single corporate office might take one to two days on-site. A multi-site portfolio, a large estate, or a maritime assessment will take longer. We scope every engagement before it begins.
How disruptive is the process?
We design every assessment to work around your operations, your people and your schedule. Most clients find the on-site element straightforward to accommodate.
What does it cost?
Every engagement is scoped individually based on the environment, the complexity and the level of assurance required. We provide a clear proposal before any work begins.
Is the process confidential?
Yes. We handle communications, scheduling and reporting with discretion throughout. Confidentiality is standard; NDAs available from first contact.
What environments do you assess?
Corporate offices, headquarters, data centres, commercial premises, private residences, estates, yachts, vessels, venues and events.
Can you help implement your recommendations?
Yes. We provide project oversight for the implementation of recommended security enhancements, through to completion.
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