STM Environmental has been acquired by Phenna Group

January 2025 — STM Environmental has been acquired by Phenna Group, gaining access to a broader network of expertise, enhanced resources and global reach. With extensive experience in life safety, environmental compliance and quality testing, along with a wide client base, Phenna Group is the ideal partner to accelerate STM Environmental’s expansion.

STM Environmental provides environmental consultancy services, helping businesses navigate the complexities of environmental legislation while achieving their sustainability goals. The company operates through two key business units: geoenvironmental and flood and drainage. These units offer specialized services, including Phase 1 Desk Studies, Phase 2 Site Investigations, Contaminated Land Assessments, Flood Risk Assessments (FRA) and Sustainable Drainage Systems (SuDS) design. Supporting organizations across various industries such as construction, development and infrastructure, STM Environmental ensures regulatory compliance while advancing sustainability objectives and managing environmental responsibilities.

Phenna Group is an international testing, inspection, certification and compliance (TICC) firm based in Nottingham, England. The group employs a buy-and-build strategy within the fragmented TICC sector, partnering with niche, independent TICC companies that serve a variety of industries. This approach creates opportunities to create synergies and unlock growth potential. Phenna Group employs over 5,300 people and serves more than 18,500 clients globally, offering STM Environmental access to new markets and opportunities for expansion.

Our role in the transaction

Oaklins S&W, one of Oaklins’ member firms in the UK, served as the advisor to STM Environmental in this transaction. This deal further highlights Oaklins’ deep expertise in the TICC sector, helping companies navigate strategic transactions within compliance-driven industries.