A common misconception about the Defence Industry Security Program (DISP) is that it is designed only for large defence primes or established contractors. In reality, small businesses make up a significant portion of the Defence supply chain, and many successfully achieve DISP accreditation.
For small and medium-sized enterprises (SMEs), DISP can appear complex, resource-intensive, or out of reach. These perceptions often discourage organisations from engaging early, even when their services are well suited to Defence work.
This article explains whether small businesses can obtain DISP accreditation, what challenges SMEs typically face, and how DISP expectations apply regardless of organisation size.
DISP is not restricted to large organisations
DISP is a risk-based framework, not a size-based one.
Defence assesses whether an organisation can protect sensitive information appropriately, based on:
- The classification of information handled
- The systems and facilities involved
- The roles performed by personnel
Organisation size is not a determining factor. A small consultancy handling SECRET information may require higher security controls than a large organisation working only with PROTECTED material.
As a result, DISP accreditation is available to organisations of all sizes, including sole traders, startups, and small specialist firms.
Why Defence engages small businesses
Defence relies on a diverse supply chain that includes:
- Specialist technical providers
- Advisory and professional services firms
- ICT and cyber specialists
- Engineering and niche capability providers
Many of these capabilities are delivered by small businesses with deep expertise in specific areas. DISP enables Defence to engage these organisations while maintaining appropriate security standards.
Accreditation provides assurance that sensitive information is protected, regardless of the size of the organisation handling it.
Common concerns small businesses have about DISP
Small businesses often hesitate to pursue DISP accreditation due to several common concerns.
These include:
- Perceived cost and complexity
- Limited internal resources
- Uncertainty about clearance requirements
- Lack of dedicated security staff
- Fear of failing the assessment
While DISP does require effort, these concerns are often overstated or based on incomplete understanding of the requirements.
How DISP requirements apply to small businesses
DISP requirements apply equally to all organisations at the same membership level. However, how those requirements are implemented can vary based on organisational structure.
For small businesses, this often means:
- Security roles are combined with other responsibilities
- Policies and procedures are scaled appropriately
- Controls are proportionate to the organisation’s size and risk
Defence does not expect small businesses to implement enterprise-scale solutions where they are not justified by risk.
DISP membership levels and small businesses
Small businesses most commonly apply for:
- Entry Level
- Level 1
- In some cases, Level 2
The appropriate level depends on the classification of information the business will access, not on its size.
Many small businesses operate entirely at the PROTECTED level and therefore require only Entry Level or Level 1 membership. Others, particularly specialist technical providers, may require Level 2 due to access to SECRET information.

Most organisations entering the Defence supply chain underestimate what DISP actually requires or assume existing policies are enough.
The DISP Readiness Quiz gives you a fast, structured way to understand where your organisation really stands.
Personnel security considerations for SMEs
Personnel security is often one of the most significant considerations for small businesses.
Key factors include:
- Identifying which roles require security clearance
- Understanding sponsorship requirements
- Allowing sufficient time for clearance processing
Small businesses often rely on a small number of key personnel. If those individuals require NV1 or higher clearance, delays can have a significant operational impact.
Planning personnel security early is critical.
Cyber security expectations for small businesses
Cyber security requirements under DISP apply regardless of organisation size, but they are assessed proportionately.
For small businesses, this means:
- Demonstrating appropriate cyber controls for the information handled
- Having clear governance and accountability
- Being able to show that controls are implemented and maintained
Defence does not expect small businesses to implement unnecessary complexity, but it does expect cyber risks to be understood and managed.
Physical security for small organisations
Many small businesses operate from shared or commercial office environments.
Physical security requirements must align with:
- Information classification
- Access arrangements
- Storage and handling practices
For some small businesses, physical security controls may be minimal but clearly defined. For others, particularly those handling higher classifications, more structured controls may be required.
The key is alignment between risk and controls.
Cost considerations for small businesses
DISP accreditation does involve costs, including:
- Internal time and effort
- Security clearance processing
- Cyber and physical security improvements
- Ongoing compliance activities
However, costs scale with requirements. Entry Level and Level 1 accreditation is significantly less resource-intensive than higher levels.
For many small businesses, DISP accreditation is a strategic investment that enables access to Defence work that would otherwise be unavailable.
Common mistakes small businesses make
Small businesses often encounter difficulties when they:
- Delay engaging with DISP until a contract is imminent
- Underestimate clearance timelines
- Apply for higher membership levels than required
- Treat DISP as paperwork rather than operational readiness
These issues are avoidable with early planning and realistic expectations.
Is DISP worth it for small businesses?
Whether DISP is worthwhile depends on the organisation’s business strategy.
For small businesses intending to work with Defence, government, or national security partners, DISP accreditation is often a prerequisite rather than an option.
For others, particularly those without clear Defence opportunities, the effort may not be justified.
Understanding this distinction helps small businesses make informed decisions.
Final thoughts
Small businesses can and do obtain DISP accreditation successfully.
DISP is designed to scale security requirements based on risk, not organisation size. With appropriate planning, proportionate controls, and realistic expectations, SMEs can meet DISP requirements and participate confidently in the Defence supply chain.
The key is understanding what is required, why it is required, and how it applies in a small business context.


