Operating nationwide, we leverage the expertise of qualified professionals and cutting-edge technology, prioritising flexibility, exceptional customer service, and unwavering quality standards.

Our services include, compliance and term maintenance, remedial and installation works, as well as energy consultancy and training services throughout the UK.

Central to our commitment to excellence is our diligent Quality Control Manager, who rigorously oversees the quality of our engineers’ work. To maintain our high standards, we conduct meticulous inspections, with a stringent policy ensuring that 20% of each engineer’s overall work undergoes thorough evaluation.

With STI, you can trust in our nationwide reach, expertise, and unwavering dedication to ensuring the safety, compliance, and optimal functionality of your facilities.