Upgrade of mains and sub mains electrical supply to the Fogg Building
Works carried out in a speedy and efficient manner, with minimal disruption to the building users and to a good quality.
Client · Queen Mary University
Dennis Johns Service Group Ltd · Company 07944282 · Trading heritage since 1972
Active·subcontractor·Head office London
Dennis Johns Service Group, established in 1972, has evolved from a family-run business into a respected medium-sized enterprise with over 50 employees and an annual turnover exceeding £10 million. They pride themselves on maintaining personal business ethics while delivering excellence in electrical, security, and infrastructure services. With a highly trained, in-house team of managers and engineers, many developed through their apprenticeship programs, Dennis Johns has been a member of NICEIC and JIB for over 25 years and has held ISO 9001 standards for 15 years.
Their expertise spans various sectors including local authorities, education, hospitality, facilities, high-risk businesses, medical facilities, and critical environments. The company is renowned for its meticulous planning, extensive experience, and commitment to quality, efficiently executing projects up to £1 million. They leverage state-of-the-art technology, innovative solutions, and a robust network of suppliers to streamline workflows, optimize resources, and ensure all work meets or exceeds industry standards, earning them a stellar reputation for delivering outstanding results within budget and on schedule.
Works carried out in a speedy and efficient manner, with minimal disruption to the building users and to a good quality.
Client · Queen Mary University
Communication was excellent as always and due to the sensitive nature of the works we couldn't have hoped for a better outcome. Works were completed on time and to programme with minimal disruption to the stakeholders.
Managed all aspects of the electrical infrastructure from high voltage to replacing a double socket.
Client · Queen Mary University
central London
Projects ranging from £1000 to £1.5 million, including office fit outs, residential extensions, works in NHS Hospital Trusts, private Hospitals and private Laboratories.
Client · Hendry Construction
Covering various business areas including Public Space, Housing, Corporate buildings and Parks. Responsive and hold excellent technical knowledge, dealing with fast emerging situations 24/7 365 days a year.
Client · London Borough of Hackney

Providing Electrical & Security services for 50 years.
Client · Westham United Football Club

Providing Electrical & Security services for 50 years.
Client · Education facilities

Providing Electrical & Security services for 50 years.
Client · Local Authorities
Hackney Council, Queen Mary University London, Westham United Football Club, Hendry Construction, North Middlesex Hospital, Northwick Park Hospital, Royal Free Hospital, Chaucer Hospital, Mount Alvernia Hospital, Blackheath Hospital, Barry Morgan, London Borough of Hackney.
This profile was compiled from public records. Claim it to add the things buyers ask for:
Dennis Johns Service Group provides electrical, security, and infrastructure services. Established in 1972, they have grown into an SME with over 50 employees and a turnover exceeding £10m. Their listed services include Electrical, Security systems and M&E contracting.
Dennis Johns Service Group Ltd is registered at LONDON, E10 7QP, in London.
Dennis Johns Service Group Ltd states that it works across London.
Companies House lists Dennis Johns Service Group Ltd as active.
Dennis Johns Service Group Ltd displays NICEIC, JIB, ISO 9001, ISO 14001, Constructionline and CHAS on its website.
Dennis Johns Service Group Ltd works in Public, Healthcare, Education, Commercial and Residential.
Dennis Johns Service Group Ltd was incorporated on 2012-02-09, though the company says it has traded since 1972.
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