FLI Group sells UK remediation specialist Vertase FLI to Adler & Allan.

Waterford, 11th June 2026:  FLI Group, the Waterford headquartered environmental services and technologies company, has announced the sale of Vertase FLI, its UK contaminated land remediation subsidiary, to Adler & Allan, a leading UK provider of integrated environmental risk reduction services backed by Goldman Sachs Alternatives.

Vertase FLI, which FLI Group acquired in 2005, has grown into one of the United Kingdom’s foremost contaminated land remediation specialists. The business employs a team of around 90 people across offices in Chesterfield and Portishead and a workshop facility in Rotherham; and has built a nationwide reputation for the design and delivery of complex brownfield and contaminated land projects across a wide variety of industry sectors and customers. The Vertase FLI team will continue to serve its clients across the UK in the same manner that it has done so to date.

FLI Group’s focus will be on its continuing operations including its Irish operations, strengthening the Group’s three remaining core businesses in water and wastewater treatment, sustainable precast concrete infrastructure, and industrial wastewater process technologies. Each of these has strong growth opportunities and expansion plans across Ireland and also the UK, which has long been a second home market for the Group and remains central to its future.

Michael Flynn, Group Executive Chairman and CEO of FLI Group, said: “Vertase FLI has been an important part of the FLI Group story for two decades, and I am very proud of all that our UK team has achieved. The team’s ability to develop solutions for some of the most complex contaminated land problems in the UK has set them apart from the remainder of the industry. The UK has always been a second home market for FLI Group and for me personally, and it will continue to be so. Each of our three remaining businesses has strong growth opportunities and clear expansion plans, in Ireland and in the UK, and our focus will be on pursuing and delivering them. Sustainability in managing Water and Infrastructure is critical to growth for these industries and the FLI Group companies are at the forefront of these sectors. In Adler & Allan, we are confident that Vertase FLI, its people and its clients have found a strong and capable partner, and I wish them every success for the future.”

The sale allows FLI Group to focus on its three remaining businesses, each of which has strong growth opportunities and expansion plans, while ensuring continuity for the customers, people and partners associated with Vertase FLI.

FLI Group is an environmental services and technologies business headquartered in Waterford, Ireland. Founded in 1989 by Michael Flynn, the Group provides innovative and sustainable solutions for the protection of air, land and water across Ireland, the UK and the wider EU. Its activities span water and wastewater treatment process technologies, sustainable precast concrete infrastructure design and manufacturing, and delivered through divisions including FLI Water, FLI Precast Solutions, FLI CAP Technology and FLI Adamelia. For more information, visit www.fli-group.com.

FLI Group was advised in the transaction by Focus Capital Partners, Beauchamps LLP and PwC.