The Security Industry Authority (SIA) is the organisation responsible for regulating the private security industry in the UK.

More about the SIA

Individual Licensing

Image shows several SIA licences spread out in a fan

We are responsible for the compulsory licensing of individuals working in specific sectors of the private security industry.

Apply for a licence

Check on your licence application

Search our Register of Licence Holders

Learn more about SIA licensing of individuals

Approved Contractor Scheme

Image shows the ACS Accreditation Mark

We manage the voluntary Approved Contractor Scheme, which measures private security suppliers against independently assessed criteria.

Learn more about the scheme

Apply for approval

Use the Online Achievement Record

Search our Register of Approved Contractors