Apply for ACS approval
Source: gov.uk (2025-10-02)

What we check and how you apply for approval.

You will need to pass all of our application checks to become an approved contractor.

We can help you with your ACS application. Before you seek advice from third party consultants, please contact us (#contact-us).

What do we check?

You provide private security services regulated by the SIA

You cannot be an SIA approved contractor unless all of the following apply to you:
- you provide private security services in the UK
- you offer services in the security activities that we license
- you provide those services under contract
- you have provided those services for at least 12 months
- you supply at least two licensable operatives in each of the activities for which you are seeking approval
Your business is ‘fit and proper’

We will check the identity, criminality, financial probity and integrity of the people running your business (often referred to as ‘controlling minds’).

We will take into consideration:
- who controls your business and the licensable individuals you supply
- any criminal convictions or charges relating to your business or its controlling minds
- the financial circumstances of your business and its controlling minds
- the integrity of your business and its controlling minds
Your directors are licensed

All directors must hold a valid SIA licence. This includes executive and non-executive directors, shadow directors, parent company directors and corporate entities holding a directorship.

Your staff are licensed

All security operatives you deploy must hold a valid SIA licence.

How do you apply for approval?

There are two ways to become approved: standard and passport. It is up to you which one you choose.

Either way will involve one of our approved assessing bodies (#acs-assessing-bodies), so you should talk to them as well. They may have a view on which route would work best for you.

Standard route to approval
- You assess your company using the ACS Self-Assessment Workbook (https://assets.publishing.service.gov.uk/media/67b8933e4ad141d9083533e2/sia-acs-saw.pdf) (PDF, 12 MB) and the ACS Self-Assessment Report (https://assets.publishing.service.gov.uk/media/633ec15ed3bf7f586e545311/sia-acs-saw-report.pdf) (PDF, 781 KB, 24 pages). To download these documents, right-click on the links and select ‘Save as…’ Please also read our 2025 update to the ACS Self-Assessment Workbook (https://www.gov.uk/government/publications/applying-for-acs-approval-guidance-and-forms/2025-update-to-the-acs-self-assessment-workbook)
- If you meet the required standard, you fill out an ACS application form (https://assets.publishing.service.gov.uk/media/67dd98ee64220b68ed6a6fa9/sia-acs-application-form.pdf) (PDF, 5.85 MB, 22 pages) and submit it through your online business account. At the same time, you pay the application fee (#sia-fees).
- We process your application and conduct our checks.
- If we confirm that you are eligible for approval, you arrange an assessment with your chosen assessing body (#acs-assessing-bodies).
- We will give your assessor all of the information you gave us in the ACS application form (https://assets.publishing.service.gov.uk/media/67dd98ee64220b68ed6a6fa9/sia-acs-application-form.pdf) (PDF, 5.85 MB, 22 pages).
- They assess your company and produce an assessment report for you. They also send a copy to us.
- We review their report and make our approval decision.
- If we approve your company, you pay the registration fee (#sia-fees).
Passport route to approval
- You get certified through one of our accredited passport schemes (#acs-passport-schemes).
- You fill in the ACS application form (https://assets.publishing.service.gov.uk/media/67dd98ee64220b68ed6a6fa9/sia-acs-application-form.pdf) (PDF, 5.85 MB, 22 pages) and submit it through your online account with proof of your certification. At the same time, you pay the application fee (#sia-fees).
- We process your application and conduct our checks.
- We make our approval decision.
- If we approve your company, you pay the registration fee (#sia-fees).
ACS assessing bodies

We do not usually assess you directly, although we can if we need to. Instead, we ask assessing bodies to conduct the assessment of your organisation on our behalf.

The assessing bodies we are partnered with are:
- British Assessment Bureau (https://www.british-assessment.co.uk/acs-standard/) (a subsidiary of Amtivo Group Limited)
- NSI (https://www.nsi.org.uk/approved-companies/sia-approved-contractor-scheme/)
- SSAIB (https://www.ssaib.org/sia-acs-scheme/)
You must pay your assessing body for your assessment. See the day rates of the assessing bodies we are partnered with (#assessing-body-fees).

All ACS assessors must abide by our ACS assessor code of conduct (https://assets.publishing.service.gov.uk/media/5f59f5c2d3bf7f7231ac6466/sia-acs-assessor-code-of-conduct.pdf) (PDF, 86.6 KB, 3 pages).

You should not proceed with a standard route ACS assessment until we tell you to.

Fees you must pay

You must pay fees to us and fees to your assessing body (#assessing-body-fees).

Fees you must pay to us

We charge two different types of fee:
- An application fee, which you must pay in full when you apply for approval. This pays for us to process your application and is non-refundable.
- An annual registration fee, which you must pay after you are approved and then every year for as long as you remain approved. This fee is non-refundable.
The application fee varies depending on the number of licensable staff in your organisation:
- Up to 10 licensable staff: £400
- 11 to 25 licensable staff: £800
- 26 to 250 licensable staff: £1,600
- Over 250 licensable staff: £2,400
The registration fee is the same for everyone: £15 per licensable individual deployed

Fees you must pay your assessing body

You need to pay your assessing body for your assessment.

These are the maximum day rates of the assessing bodies we are partnered with:
- full-day in-person assessment: £1,100
- half-day in-person assessment: £600
- half-day remote assessment: £600
- full-day in-person assessment: £1,100
- half-day in-person assessment: £550
- half-day remote assessment: £550
- full-day in-person assessment: £1,125
- half-day in-person assessment: £675
- half-day remote assessment: £500
SIA accredited passport schemes

We accept the passport scheme shown below.

NSI ACS Passport Scheme

This scheme covers the following licensable activities:
- Cash and valuables in transit
- Close protection
- Door supervision
- Key holding
- Public space surveillance (CCTV)
- Security guarding
Contact us

If you have any enquiries regarding the ACS, please submit these through your online business account (select ‘Help’). If you do not have a business account you can register for one (https://services.sia.homeoffice.gov.uk/login/).

Or you can call us on xx-xxxx-xxxx.

Third party advice

You may choose to use a consultant to help you with your ACS application. If you do, we recommend that you research and assess potential suppliers before choosing them. This will help you to determine the best option for your organisation, and also help to ensure you get value for money.

We do not train, approve, or enter into any commercial relationship with consultants. You should beware of any consultants who claim to have any such relationship with us.

We will not discuss your application with any consultants you use. We will only communicate with the contacts we have on file for your company.