Trusted Compliance Services | Complii by Your Side

Who we are

Delivered by our specialist divisions.

Complii is a leading integrated provider of safety and regulatory compliance services across water, air, fire, and electrical - each delivered by our specialist divisions. Established in 2019, we exist to lead businesses in building safety compliance, enabling our customers to take advance of the full range of services that protect their people, businesses and assets.

As a trusted compliance partner, we help our clients to reduce risk, improve safety and assure regulatory compliance in a wide range of sectors including hospitality and leisure, manufacturing, social housing and care homes, the public sector, construction, healthcare, pharmaceutical, education and retail.

Why work with us?

Our services.

Each of our compliance services are delivered by our specialist divisions. As a trusted compliance partner, we help our clients to reduce risk, improve safety and assure regulatory compliance.

See our services

Our water compliance services safeguard your systems against risks such as Legionella and ensure safe, efficient management across your sites. From risk assessments and monitoring to system maintenance and remedial works, we deliver tailored solutions that minimise disruption. All work is carried out by qualified specialists, supported by clear reporting and ongoing guidance to keep your operations compliant and secure.

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Our air compliance services protect indoor environments by ensuring ventilation and air quality systems meet the latest health and safety regulations. From indoor air quality testing to ductwork cleaning and maintenance, we provide solutions that create safe, comfortable spaces. Every service is delivered by accredited engineers, with practical reporting and expert advice for long-term compliance.

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Our fire compliance services help protect your people and property by ensuring all systems meet stringent safety standards. From fire risk assessments and alarm testing to suppression systems and emergency lighting, we provide end-to-end support with minimal disruption. Our accredited engineers deliver reliable testing and maintenance, with transparent reporting to support your legal obligations.

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Our electrical compliance services ensure your systems are safe, efficient, and fully compliant with current regulations. From fixed wire testing and portable appliance testing (PAT) to emergency lighting and remedial works, we deliver tailored solutions with minimal disruption. All work is carried out by qualified, DBS-checked engineers, supported by clear reporting and expert guidance for ongoing compliance.

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Our security compliance services help protect your people, assets, and premises with systems that meet regulatory and operational requirements. From access control and CCTV to intruder alarms and system maintenance, we deliver tailored solutions designed to minimise risk. All services are carried out by qualified specialists, backed by reliable reporting and ongoing support to strengthen your security compliance.

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See our services

We're an accredited contractor

News & insights

News / November 1, 2025

Introducing Complii: A new chapter in building safety and compliance

For years, navigating the world of building safety and regulatory compliance has felt complicated and fragmented. You might work with one specialist for your fire systems, another for water quality, and yet another for electrical testing. It's a system that creates administrative waste, unnecessary risk, and makes it hard to get a complete, clear picture of your building's health.

Insights / July 30, 2023

Does my building need emergency lighting?

Emergency lighting plays a crucial role in ensuring the safety of occupants during power outages or emergencies. In the United Kingdom, strict regulations govern the installation, maintenance, and testing of emergency lighting systems. These requirements help reduce risks, support safe evacuation, and provide essential illumination for emergency response teams.

News / December 8, 2021

Complii acquires Zeta Services

Experts in risk management and compliance solutions for water and fire, Zeta has joined Complii to offer the full range of water compliance solutions. Zeta was founded 23 years ago by Rob Nicoll who will remain with the business and continue to lead its growth.

10/10. The performance, attention to detail, and quality of work by Complii were exemplary. The competence and professionalism of the entire team were exceptionally high. We are very pleased with their technical expertise. Complii collaborates closely with us to develop tailored compliance programs for each project, from initial design input through construction and commissioning, and beyond handover. The results of this partnership have led to systems and projects with zero compliance issues, resulting in seamless commissioning periods and satisfied clients.

London Borough of Redbridge Project manager Housing Refurbishment
We’re a very big national concern, with cinemas based everywhere from Jersey in the Channel Islands to Scotland to Ireland and we have very specific needs. We wanted to appoint a professional and reliable company which understood what we really needed and could just get on with the work. Intersafe stood out for us with both its positive marketing campaign and its very competitive price point. We have been working together for a year now and I am continually impressed by its proactive service and flexible approach. Intersafe is a small company but it has the flexibility and capacity to handle a big national account. Its administration is excellent and its response is quick. Feedback from the cinemas has been very positive and I am delighted with our working relationship

Technical Manager Cineworld
Health and safety is our top priority here at the NCC. Our workshop isfull of state-of-the art equipment, capabilities and technologies, that were unfamiliar to Intersafe’s testing engineer, Andrew. We worked together to understand the test specifications and were able to successfully complete the PAT requirements for all items. I express my greatest thanks to Andrew for helping test our equipment at the NCC. His hard work helped keep production downtime to a minimum and significantly reduced my workload. I look forward to working with Andrew again.

Dee Caines Maintenance technician National Composites Centre

Introducing Complii: A new chapter in building safety and compliance

Does my building need emergency lighting?

Complii acquires Zeta Services

Compliance with confidence.