Accreditations

CHAS Elite is the highest tier of accreditation from the Contractors Health and Safety Assessment Scheme, signifying top-tier compliance and risk management. It verifies that organisations meet the Common Assessment Standard across 13 risk areas, including health and safety, finance, and environmental — often required for large-scale public sector procurement.

Constructionline Gold is a high-level, verified accreditation for UK construction suppliers that validates compliance with industry standards beyond basic pre-qualification. It ensures compliance with PAS 91, the Common Assessment Standard, and includes SSIP health and safety assessments.

Constructionline Silver membership confirms that JK EMS has met pre-qualification requirements appropriate to public and private sector procurement, providing verified supplier status on the UK's leading procurement platform.

Constructionline Bronze membership provides foundational pre-qualification status, confirming basic supplier verification and registration on the Constructionline procurement platform for public and private sector work.

Our Integrated Management System is certified to ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), and ISO 45001:2018 (Occupational Health & Safety). Together, these standards ensure we deliver consistent quality, minimise environmental impact, and protect worker safety across every project.

ISO 27001:2022 is the internationally recognised standard for Information Security Management Systems. It provides a best-practice framework to manage information security risks, strengthen operational resilience, meet legal and regulatory requirements, and improve stakeholder confidence.

ISO 50001:2018 is the international standard for Energy Management Systems. It provides a framework for establishing, implementing, maintaining, and improving energy efficiency, reducing energy consumption, and lowering greenhouse gas emissions — supporting our commitment to sustainable M&E delivery and Net Zero goals.

NICEIC Approved Contractor status is awarded to electrical businesses assessed by the National Inspection Council for Electrical Installation Contracting to operate at the highest industry standards. Deemed competent to design, install, commission, and maintain commercial, industrial, and domestic electrical work complying with BS 7671 wiring regulations.

City & Guilds Qualified signifies holding a respected, industry-led vocational credential from a UK-based awarding body, confirming competence in specific practical skills across electrical and mechanical disciplines.

REFCOM F-Gas accreditation is the UK's leading, DEFRA-appointed certification scheme proving businesses legally comply with regulations regarding fluorinated greenhouse gases. It ensures companies installing, servicing, or maintaining refrigeration and air conditioning systems properly handle refrigerants, minimise emissions, and maintain accurate records.