What We Do

We help our clients solve some of the world’s most complex environmental challenges and provide governments, public agencies and businesses with leading analysis, advice and data.

Clients benefit from our unprecedented depth of capability across six key practice areas: Air & Environmental Quality; Energy & Climate Change; Resource Efficiency & Waste Management; Water; Sustainable Transport; and Chemical Risk.

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Air Quality

Helping clients protect the air we breathe
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Cascade Water & Environment

From policy to practice

Energy & Climate Change

World leading energy and climate change consultancy for four decades
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PPA Energy

Planning Energy for a Sustainable World
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Resource Efficiency & Waste Management

Transforming the way organisations manage resources
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Sustainable Transport

Sustainable transport solutions for a changing world
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Chemical Risk

Providing customers around the world with Chemical Emergency Response and Risk Management