When should you carry out a Physical Security Review? Key triggers for businesses

A physical security review should be carried out whenever significant changes occur within an organisation, including mergers, relocations, business growth, security incidents, changing threats, operational changes or major projects. Organisations should also conduct periodic reviews, even when no specific issue has occurred, to ensure their security measures remain effective and aligned with current risks.

When should you conduct a physical security review?

A physical security review should be undertaken:

• After a merger or acquisition
• When moving to a new site
• Following significant business growth
• After a security incident or near miss
• When the threat landscape changes
• Following operational changes
• Before major projects
• To meet regulatory or insurance requirements
• If security arrangements haven’t been reviewed for over 12 months.

For many organisations, physical security reviews are reactive.A security incident occurs and suddenly there’s a need to understand whether existing arrangements are fit for purpose.The reality is that physical security should be reviewed long before something goes wrong.Businesses change constantly. They grow, relocate, acquire new sites, adopt new technologies and introduce new ways of working. Over time, those changes can alter an organisation’s risk profile significantly, often without a corresponding review of the security measures designed to protect it.A physical security review provides an opportunity to step back and ask a simple question:Do our current security arrangements still reflect the risks we face today?If the answer isn’t clear, it may be time for a review.

Following a merger or acquisition

Acquisitions often bring together different people, processes and technologies, as well as entirely new facilities and security arrangements.It’s not uncommon to find:

• Different standards of physical security across sites
• Inconsistent access control processes
• Legacy systems that are no longer supported
• Limited documentation or understanding of existing risks
• Different approaches to incident management and governance

A physical security review can help identify vulnerabilities early, establish a baseline and support integration planning.Because when organisations inherit new facilities and operations, they also inherit the risks that come with them.

When moving premises or opening new locations

A new office, warehouse or operational facility presents an ideal opportunity to review physical security requirements.The risks associated with a new location may be very different from those of an existing site.Questions worth considering include:

• Are perimeter security measures appropriate?
• Is access control sufficient?
• Are critical assets adequately protected?
• Does the site require different security technologies or procedures?
• Are emergency arrangements still appropriate?

Security should be designed around the risks and operational requirements of the location rather than simply replicating arrangements from another site.

Following significant organisational growth

Businesses rarely look the same as they did five years ago.As organisations grow, so do their security requirements.More employees, more visitors, additional contractors and expanded operations can all increase complexity and introduce new vulnerabilities.Over time, organisations often discover that security arrangements that worked well in the past no longer provide the same level of assurance.A physical security review helps determine whether existing controls have kept pace with the organisation’s growth and whether further investment or changes are required.

After a security incident or near miss

Sometimes an incident exposes weaknesses that were not previously visible.This could include:

• Unauthorised access
• Theft or criminal damage
• Security breaches
• Workplace violence
• Protests or disruptions
• Failures in existing controls

Even where the impact of an incident is limited, it can provide valuable insight into how effective current arrangements really are.Near misses can be equally valuable.They often highlight vulnerabilities before a more serious event occurs and can provide an opportunity to strengthen security and resilience.

When the threat landscape changes

The risks facing organisations do not remain static.Changes in the operating environment, increased activism, local crime trends or emerging threats can all affect the suitability of existing security arrangements.Similarly, organisations operating within critical infrastructure, high-profile sectors or politically sensitive environments may experience changes in their threat profile over time.Regular reviews help ensure that physical security measures remain proportionate and aligned with current risks.

Following changes to how the organisation operates

The way organisations use their sites and facilities can change significantly.Hybrid working, flexible working arrangements and increased use of contractors and third parties have altered how many organisations think about physical security.Buildings that were once fully occupied may now have lower occupancy levels and different patterns of use.Access requirements may have changed, and procedures that worked well previously may no longer reflect operational reality.A physical security review can help determine whether security measures remain appropriate and support the way the organisation now operates.

Before major projects or investments

Significant changes to technology, infrastructure or operations can create new security considerations.This may include:

• New operational facilities
• Expansion projects
• New technologies
• Changes to critical assets
• Large-scale refurbishment programmes

Reviewing physical security at the planning stage is often more effective than trying to address issues after implementation.Security is generally easier and more cost-effective to build in than it is to retrofit later.

To meet regulatory, insurance or assurance requirements

Increasingly, organisations are expected to demonstrate that they understand and manage security risks.Customers, regulators, insurers and other stakeholders may seek assurance that appropriate measures are in place to protect:

• People
• Premises
• Information
• Critical assets
• Business operations

A physical security review can help organisations understand their current position, identify areas for improvement and provide evidence that risks are being actively managed.

Sometimes, it’s simply been too long

One of the most common reasons for carrying out a physical security review is also one of the simplest.It hasn’t been reviewed for years.Security measures often remain in place for long periods without being challenged. Yet businesses rarely stand still.

• People change.
• Operations change.
• Threats change.
• Buildings change.

The question organisations should ask themselves is:If we were designing our physical security arrangements today, would we do it the same way?Quite often, the answer is no.

Physical security reviews shouldn’t only happen after something goes wrong

A physical security review is not about finding fault or creating unnecessary change.It’s about understanding whether existing arrangements still provide the level of protection the organisation needs.Regular reviews help identify vulnerabilities, support informed decision-making and ensure security measures continue to align with business operations and risk.Because effective physical security isn’t simply about having controls in place.It’s about making sure those controls still make sense for the organisation you are today, not the organisation you were several years ago.If your organisation has changed significantly, expanded operations or simply hasn’t reviewed its security arrangements for several years, it may be time to reassess whether your physical security measures still reflect today’s risks.A structured physical security review can help identify vulnerabilities, improve resilience and ensure security investment remains aligned with business objectives.To find out more get in touch.

Frequently Asked Questions about Physical Security Reviews