Our History

In 2019 Tetra Tech acquired professional services consultancy WYG as part of a strategy to bring our market-leading services to new regional markets. This acquisition built upon a small foothold that we had already established in Europe through the earlier acquisitions of Norman Disney & Young and Coffey.

In 2021 WYG fully adopted the Tetra Tech name and visual identity across all areas of its business marking a significant milestone in its 60+ year history. Whilst WYG and its predecessor brands (many remember the company of White Young Green) are no longer in circulation their DNA is now part of the collective Tetra Tech family continuing to deliver outstanding projects for our clients.

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