Complii, one of the UK’s leading providers of building safety and regulatory compliance services, announced the acquisition of Sweetbriar Limited, a specialist provider of water hygiene, water treatment and legionella control services. Based in Chandlers Ford, Hampshire, Sweetbriar brings over two decades of technical expertise and a strong reputation for service-led water compliance to Complii.

The deal aligns with Complii’s wider platform strategy of building a genuinely end-to-end building safety and compliance partner for clients across the UK.

Founded in 2004, Sweetbriar Limited provides water hygiene, water treatment and Legionella control services to clients across England and Wales. The business has built a strong reputation for high-quality, service-led water compliance, backed by an experienced team.

The acquisition further enhances Complii’s position as the UK’s most comprehensive building compliance partner. Building owners and managers can now access an even more integrated suite of compliance services - spanning water, air, fire, electrical, and lifts and escalators -through a single, trusted partner.

Sarah Dixon, CEO of Complii, said: “Sweetbriar is a business built on genuine technical expertise and a real commitment to doing right by its customers - qualities that make them an excellent fit for Complii. Their team’s depth of experience in water hygiene and legionella control strengthens our water offering considerably, and I’m delighted to welcome Matthew, Seb, and the whole Sweetbriar team to the Group.”

Seb Gray, incoming Managing Director of Sweetbriar Limited, welcomed the acquisition as an exciting next step for the business and its team: “Joining Complii gives Sweetbriar access to greater resources and reach, while allowing us to continue delivering the same high standard of service our clients have come to expect. The shared focus on compliance and quality made Complii a natural partner, and we’re looking forward to being part of something bigger.”

The acquisition builds on Complii’s ‘buy and build’ growth strategy and follows a number of recent acquisitions across the Group, including Celtic Fire Security, Classic Lifts (Scotland) Limited, The Escalator Company, Parr Fire Protection Services, and Tay Fire and Security. With Sweetbriar now part of Complii, the Group continues to grow its water compliance capability, providing clients across the UK with greater consistency, integration, and peace of mind.