Accreditation & Certification

Andrew Sinclair strives to continually improve Health & Safety & Quality and enjoys various memberships and accreditation with industry recognised bodies. This ensures Andrew Sinclair is keeping up with best industry practice.

Water Industry Registration Scheme

The Water Industry Registration Scheme is for contractors who provide new connections to the existing water supply or sewerage system. These are referred to as “self-lay” organisations or SLOs.

Lloyds Register operate the Water Industry Registration Scheme (WIRS) on behalf of water utility companies and are one of the world’s leading providers of professional services for engineering and technology – improving safety and increasing the performance of critical infrastructures worldwide.

In order to be WIRS accredited, the companies undergo technical assessments from Lloyd’s Register. We assess several areas, including design, construction, connections, commissioning and project management. By becoming WIRS accredited, companies don’t need to be approved by 22 separate water companies.

A WIRS accredited self-lay organisation may perform works on the connection of water mains and supplies to a property, dependent on the status and scope of accreditation.

Andrew Sinclair Ltd are accredited to carry out work as follows

  • CMS Construction of Mains and Services (All Works)
  • CRMC Construction of Routine Mains Connections
  • CNRBC Construction Non-Routine Basic Branch Mains Connections
  • CNRCC Construction Non-Routine Complex Mains Branch Mains Connections
  • ERMIM External Routine Meter Installation Maintenance
British Assessment Bureau ISO 45001:2018


Andrew Sinclair are  certified for BS ISO 45001:2018 Occupational Health & Safety Management Systems

The standard provides a framework to enable businesses to implement effective arrangements for managing occupational health & safety (OH&S)

ISO 45001:2018, the new health and safety standard is internationally recognised and promises to make the workplace even safer.

Andrew Sinclair certification for this standard  is valid from 21 December 2020 until 20 December 2023



Certificate of BSI Membership


BSI is the business standards company that helps organizations all over the world make excellence a habit. For more than a century we have been challenging mediocrity and complacency to help embed excellence into the way people and products work. That means showing businesses how to improve performance, reduce risk and achieve sustainable growth. As a global leader in helping organizations improve, our clients range from high profile brands to small, local companies in 182 countries worldwide.

Scottish Plant Owners Association

SPOA is a trade association whose members are all interested in the business of owning and hiring plant used in the UK construction industry. there are more than 250 member organisations.

A main area of emphasis is on the training requirements imposed on plant operators and the Executive Committee closely monitors developments in the Construction Skills Certification Scheme (CSCS) and Construction Plant Competence Scheme (CPCS).

Federation of Small Businesses

Membership Number 1093117

Andrew Sinclair have been a member of the FSB since 1993