Assurance accounting for quality, safety and environmental along with the associated processes are of paramount importance to all companies forming the Signal House Group.

The Group and its operational companies hold the following certifications:

  • ISO 9001:2015 – Quality Management Systems
  • ISO 14001:2015 – Environmental Management Systems
  • ISO 45001:2018 – Occupational Health & Safety Management Systems

Signal House Group Ltd Certification

Collis Engineering Ltd & Collis Civil Engineering
Principal Contractor License
Signal House Ltd
Signal House Ltd SIL 4 Certificate
Signal House Group Ltd
Signal House Group 9001 14001 45001 Integrated Cert