CHAS Elite
CHAS Elite is the highest level of CHAS accreditation and the UK construction industry’s pre-eminent prequalification system and is backed by Build UK and the Civil Engineering Contractors Association (CECA). CHAS Elite certification confirms our commitment to the highest operational standards, and that Interlocks Surveys complies with the Common Assessment Standard.
BS EN ISO 14001 Environmental Management System
ISO 14001 is an internationally recognized standard for Environmental Management Systems (EMS). It provides a framework for organisations to establish, implement, maintain, and improve their environmental management practices, ultimately helping them to reduce their environmental impact, comply with regulations, and improve overall efficiency.
BS EN ISO 45001 Occupational Health & Safety Management System
ISO 45001 is the international standard for occupational health and safety management systems. It specifies the requirements for an OH&S management system to help organisations provide safe and healthy workplaces. It helps organisations identify hazards, assess risks, implement control measures, and continuously improve their OH&S performance.
Constructionline Social Value
Interlocks Surveys has passed the Constructionline Social Value Assessment, demonstrating our commitment to making social value a priority within our organisation. This includes implementing robust Equality, Diversity and Inclusion (EDI) processes, providing equal opportunities for minority groups, providing good working conditions, supporting employees’ mental wellbeing, engaging with local communities, and working to improve our organisation’s sustainability.
Common Assessment Standard
By completing the Common Assessment Standard, Interlocks Surveys has demonstrated its compliance and commitment to risk management to customers, clients and employees. The Common Assessment Standard is a comprehensive assessment programme, covering 13 key areas of risk management and is a requirement of all firms working on public sector contracts.
SSIP (Safety Schemes in Procurement)
Holding SSIP accreditation demonstrates that our firm has successfully passed a rigorous, third-party audit of our health and safety management systems. This industry-recognised standard assures our clients that we are fully compliant with construction regulations, and committed to maintaining the highest levels of safety on every site.










