Standards & Accreditations

Approved Contractor Scheme (ACS)

The Approved Contractor Scheme (ACS) provides a recognised hallmark of quality within the private security industry.

Approved contractors are assessed against 78 different areas of their business. These cover topics as diverse as staff training, financial management and the company’s health and safety policies.

When you choose an approved contractor you can be sure that the business you are working with has passed a through quality assurance check.

Double Check Security Group Ltd trading as T-Class UK is holding a SIA approved contractor status for the provision of Security Guarding Services.

Safe Contractor

T Class UK has been awarded the Alcumus Safe contractor Accreditation, Which reassures our clients that health and safety, is being handled in the correct and sufficient manners on their sites.


Action Counters Terrorism

T-Class UK actively supports ACT Awareness elearning working closely with the Metropolitan police to keep up-to-date on the latest legislation whilst also providing training to our guards through our training provider.

The aim of ACT is to:

  • Help understand the threat from terrorism to the UK
  • Guide individuals on what to do if they find themselves involved in a terrorist incident or events that lead up to a planned attack
  • Enable people to recognise and report suspicious activity
ACT-Blue -

NASDUNational Association of Security Dog Users

Our sister company Metroguard Oxford Ltd supplies qualified NASDU dog handlers. The NASDU qualification covers the skills and knowledge needed to work as a general-purpose Security Dog Handler in a professional environment.

Information Commissioner's Office

T-Class UK conform to the UK’s independent authority set up to uphold information rights in the public interest, promoting openness by public bodies and data privacy for individuals


T-Class UK is a member of RISQS, the railways supplier assurance scheme RISQS which is run by the industry, for the industry, under the stewardship of RSSB.

RISQS remains central to the safe and cost-effective procurement of railway products and services, providing assurance for 90 plus buyers including Network Rail and Transport for London (TfL) to do business with confidence with over 4,000 suppliers.

ISO 9001

ISO 9001 sets out the requirements of a complete Quality Management System (QMS) that can be adapted to suit your organisation. By scrutinising and streamlining your processes against the QMS, your organisation will be far more able to meet your ambitions for sustainability and growth.

Often a requirement for tender applications and with a strong 30-year history, ISO 9001 is widely seen as the most credible, robust and effective business improvement tool on the market.

Cert Ref No 11538


At a time when Cleaning & Hygiene is of increasing importance, we can only reiterate the urgency of maintaining standards for the industry.

With contributions from highly regarded industry experts and through our membership of the BICS we have combined intelligence, experience and knowledge, which when followed will become an integral part of your organisation’s overall performance.

Contents include:

  • BICSc recommended colour-coding
  • The Cleaning Professional’s Skills Suite explained
  • ‘BICSc Outcome Criteria’ learn an effective and efficient way of measuring cleanliness and what is and isn’t acceptable.
  • ‘BICSc Compound Productivity Rates’ provide a standardised figure for calculating time needed to complete a cleaning operation.

The standards adopted by T-Class UK and applied across all disciplines, originate from the knowledge and experience of industry experts.

The combination of the skilled and experienced management within T-Class UK and the expertise and guidance of BICS are a winning team.


ISO 9001:2015 Certification

ISO 9001:2015 is a global standard that establishes criteria for the establishment of a robust Quality Management System, outlining the precise processes, procedures, and actions that organizations need to develop, execute, uphold, and enhance to effectively oversee product manufacturing or service delivery.

Armed Forces Covenant

The Armed Forces Covenant is a promise by the nation ensuring that those who serve or have served in the Armed Forces, and their families, are treated fairly.

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