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Environmental compliance and sustainability are inseparable from commercial success. Our approach to environmental advisory is rooted in operational experience providing equipment and consulting services across industries, combining transaction-focused work for investors and management teams with independent environmental consulting and equipment supply to industrial clients.

What we do

Integrated environmental advisory grounded in operational experience

The Calash Group brings together its flagship due diligence and strategic management consultancy with expert network consultancy Candour and wastewater treatment and environmental risk consultancy EP, giving clients access to a breadth of environmental expertise that few advisory firms can match.

Whether supporting an investor through environmental due diligence on a transaction or helping an industrial business understand and reduce its environmental footprint, our team delivers practical, commercially grounded advice at every stage.

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Service we provide
  • Environmental Due DiligenceAssessment of a business's operations, real estate and supply chain to identify environmental risks that could lead to commercial, human, financial and sustainability challenges.
  • ESG Strategy Support Working with management teams to identify environment, social and governance strategies that enhance sustainability practices in tandem with commercial metrics.
  • Environmental Advice & Consulting Understand and mitigate an organisation's environmental impact, ensuring compliance with regulations and promoting sustainability, including on-site assessments such as soil and groundwater testing and air monitoring.
  • Wastewater SolutionsInstallation and servicing of wastewater treatment systems, as well as independent assessment and implementation of water management strategies and technologies to improve operational efficiency and reduce environmental impact.

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Service Specialist

David Parkes
Environmental Engineer
David joined Environmental Processes in 2026, bringing expertise in water testing, analysis, treatment, and re-use across the industrial and marine sectors. He holds an undergraduate degree in Conservation Biology from the University of Aberdeen.
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Calash
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