Complii

Complii: comprehensive building compliance in the UK

Complii presents itself as an integrated provider of building safety and regulatory compliance services, with specialist divisions in water, air, fire, electrical, lifts and escalators, and security. The company was founded in 2019 and operates in the UK, where it serves clients in sectors such as hospitality and leisure, manufacturing, social housing, the public sector, construction, healthcare, pharmaceutical, education and retail.

Specialist divisions and services

Complii's activity is organised into specialist divisions covering different areas of building regulatory compliance:

• Water hygiene: legionella risk management services, risk assessments, monitoring, system maintenance and remedial works, with clear reporting and ongoing guidance.
• Air hygiene: protection of indoor environments through air quality testing, ductwork cleaning and maintenance, with the aim of ensuring ventilation systems comply with current regulations.
• Fire: fire risk assessments, alarm testing, suppression systems and emergency lighting, with comprehensive support and minimal disruption.
• Electrical: certified inspections, maintenance and compliance for critical systems, including fixed wire testing, portable appliance testing (PAT), emergency lighting and remedial works, carried out by qualified engineers and DBS-checked.
• Lifts and escalators: complete solution for the inspection, maintenance, repair, modernisation and installation of lifts, escalators and travelators.
• Security: licensed security solutions, access control, CCTV, intruder alarms and system maintenance.

Growth through acquisitions

Since its founding, Complii has strengthened its offering by incorporating specialist companies. In 2026 it announced the acquisition of White Lift Services, an independent lift company based in Leeds, to strengthen its lifts and escalators division. That same year it acquired Sweetbriar Limited, a specialist provider of water hygiene, water treatment and legionella control based in Chandlers Ford (Hampshire) with more than two decades of technical experience. Also in 2026 it incorporated Classic Lifts (Scotland) Limited, based in Glasgow, which led to the creation of the dedicated lifts and escalators service line within its portfolio.

Sectors served

The company directs its services to a wide variety of sectors: hospitality and leisure, manufacturing, social housing and care homes, the public sector, construction, healthcare, pharmaceutical, education and retail. Among its clients, the London Borough of Redbridge is mentioned, with which it collaborates in the development of compliance programmes tailored to each project, from initial design through construction, commissioning and handover.

Accreditations and professional approach

Complii describes itself as an accredited contractor and emphasises that all its services are carried out by qualified specialists, with transparent reporting and expert advice to maintain long-term compliance. The company presents itself as a trusted partner that helps reduce risk, improve safety and assure regulatory compliance.