Change description : 2025-11-06 11:11:00: Updated the form to a new version with an extra question in sections A and C (questions A2 and C9). [Guidance and regulation]
Unless we have given you permission to do otherwise, you must only sub-contract to SIA approved contractors. Your customers have contracted an SIA approved contractor and will therefore expect the service they receive to be from an approved contractor.
In exceptional circumstances, we may allow you to sub-contract to a company we have not approved. You need our permission to do this and your customer must also agree to it. Any permission we grant will be for a limited time – usually no longer than 3 months.
You must fill in all fields marked with an asterisk (*). We will reject any form in which any of these fields are left blank.
Upload the form to your SIA online business account. Select ‘Help’, then select ‘Other’ as the category. Enter “sub-contractor request” as the text of your message.
Ideally, you should ask us for permission before you sub-contract the work. If this is not possible then you must do so within 5 working days after deployment.
How we make our decision
We review each application individually. We will consider your specific situation.
We will only give you permission if we agree that your circumstances are exceptional.
We will also consider:
your track history of following ACS rules
your efforts to avoid using a company we have not approved
whether you could have prevented the situation by acting earlier
any potential risk to public safety or the reputation of our approved contractor scheme
the due diligence and quality checks you have done to confirm the sub-contractor meets the required ACS standard
how you will align the sub-contracted service with ACS requirements (your ‘sub-contractor plan’)
We will try to reach a decision within 5 working days.
What we mean by ‘ACS requirements’
When we refer to you aligning the sub-contracted service with ACS requirements, these are the specific points we are referring to:
Criterion 1 – Strategy
Indicator 1.1.2 – key stakeholders are aware of the organisation’s overall approach to business
Indicator 1.2.1 – critical success factors have been clearly identified and internal measures are in place to monitor progress towards achievement
Criterion 2 – Service delivery
Indicator 2.2.1 – there is a current and effective plan to ensure continuity of service delivery
Indicator 2.4.1 – use of sub-contractors is agreed with customers and subject to defined quality assurance procedures
Indicator 2.4.2 – effective customer and consumer performance indicators and service level agreements have been established
Indicator 2.6.1 – the organisation regularly reviews performance against service level agreements and/or key customer performance indicators
Criterion 3 – Commercial relationship management
Indicator 3.1.1 – effective purchasing procedures are implemented
Indicator 3.5.1 – the organisation regularly reviews performance against responses from customer opinion gathering
Criterion 4 – Financial management
Indicator 4.2.1 – clear and effective management of the payroll can be evidenced
Indicator 4.2.4 – there is sufficient insurance to cover contractual requirements
After we have reached our decision
We will tell you in writing whether we give you permission. If we do, we will explain the conditions of our permission and the date it expires.
If we do not give you permission, we will explain why.
You can appeal our decision if we do not give you permission. Contact us through your business account to ask for an independent review.
What counts as exceptional circumstances?
Exceptional circumstances are when your only option is to use a contractor we have not approved. This is usually when you have an urgent need and no SIA-approved contractor is available.
Some examples are:
you need a specialised service and you cannot find an SIA-approved contractor who offers it
you have a short-term security demand that your company cannot satisfy on its own (such as a festival or major event) and you cannot find enough SIA-approved contractors to cover it
you need security services urgently for a situation where people’s health and safety is at risk
Amended the first bullet point in the 'What counts as exceptional circumstances?' section. The edit removed an example but otherwise leaves the text as it was.
16 May 2025
Replaced the request form with an updated version. Amended the 'How we make our decision' section to include 2 additional points we consider and an explanation of what we mean by 'ACS requirements'. Moved some of the material from 'How we make our decision' to 'After we have reached our decision'.