SIA Approved Contractor

Custodian Guarding Company Limited currently holds SIA Approved Contractor Scheme (ACS) status for the provision of: Security Guarding.


When it comes to protecting your buildings, staff and members of the public, you can't put a price on security - or on the peace of mind that comes from knowing you've got the best people in the private security industry working for you. That's why the Security Industry Authority (SIA) has created the Approved Contractor Scheme (ACS).

The ACS provides a recognised hallmark of quality within the private security industry. So when you choose a security supplier who is an SIA approved contractor, you can be sure that the security staff they employ are amongst the best.

What the scheme means for you

In the search for highly skilled professional security contractors, ACS quality assurance scheme delivers an independent, extensive and rigorous assessment. Simplifying the process of choosing the best security suppliers. So you can rest assured that approved contractors can meet your individual needs and add value to your organisation.

A SIA Approved Contractor can Demonstrate that:

  • It has processes in place to monitor and manage service delivery to both customers and consumers
  • It trains and develops its people to deliver customer satisfaction and added value, to an agreed standard
  • The leaders develop and implement an effective management system that continually improves the organisation and it's performance
  • It measures and improves performance against key customer consumer indicators


  • Arriva
  • Metropolitan Borough of Wirral
  • NHS
  • Opal
  • Port Sunlight
  • Azure Collection
  • Wirral Partnership
  • Wirral Met