The US firm confirmed it has struck a deal to buy the UK’s leading M&E consultant Hoare Lea.

Established in 1862, Hoare Lea has more than 900 employees operating out of a dozen offices in the UK and two in the Middle East.

Last year Hoare Lea achieved £90m revenue, generating a £21m pre-tax profit.

Headquartered in California, Tetra Tech had completed over 36 acquisitions since its launch in 1966, helping to expand its locations to 450, with some 20,000 employees and revenue of over $3bn.

Justin Spencer, Hoare Lea Managing Partner, said: “We are excited to join Tetra Tech. By joining the High Performance Buildings Group we will be able to build upon our strong and successful history of delivering outstanding outcomes for our clients.”

Dan Batrack, Tetra Tech Chairman and CEO, said, “The addition of Hoare Lea further advances Tetra Tech’s industry-leading sustainable building solutions for our commercial and government clients.

“They join our global practice that provides state-of-the-art net zero carbon design, digital engineering and building intelligence for the future of the built environment.”