- Overview
- Experience
Introduction
Becky is a climate change and ESG lawyer helping businesses navigate sustainability regulation, reporting obligations, and the transition to a nature-positive and net zero world.
Becky Clissmann is our Global Sustainability Expertise Counsel focusing on climate and nature risk change and the transition to net zero.
Becky has over 20 years' experience of climate change and sustainability law and regulation from her roles in private practice and industry including as a Senior Editor in the environment team at Practical Law, Thomson Reuters. Becky also obtained extensive experience of climate change policy measures working for the Carbon Trust and as Managing Director of The Chancery Lane Project.
Becky works closely with colleagues across the firm including our Environment and Safety practice advising on ESG regulation including sustainability reporting, supply chain due diligence and transition planning. She also regularly works with colleagues in our Risk Advisory practice to deliver integrated advice and tech solutions concerning ESG risk management across a range of sectors.
Becky is co-chair of the Legal Sustainability Alliance, a co-convenor of the UK Environmental Law Association's Climate Change and Energy Working Party and a member of The Law Society's Climate Change Committee and the Bar Council's Climate and Nature Panel.
- An international specialist insurance company | Advised on a review of the company's transition plan against the TCFD and the Transition Plan Taskforce (TPT) Disclosure Framework to identify gaps and risks and suggest amendments to address those.
- A global real estate consultancy | Advised on an horizon scanning report of changes to sustainability reporting requirements that apply in the UK and how these may impact its existing reporting.
- An international cruise operator | Advised on the application of the Streamlined Energy and Carbon Reporting (SECR) regime to its UK emissions and changes to SECR and climate-related financial (CFD) disclosures following its delisting.
- An international mining company | Advised on a sustainability reporting risk screen in relation to its operations in the UK, EU and US.
- A leading international auction house | Advised on inclusion of sustainability due diligence wording in its corporate policies.
- International luxury goods retailer | Advised on a horizon scanning report to understand the impact of forthcoming ESG legislation across multiple jurisdictions including ESG supply chain regulations and producer responsibility.
- A multinational real estate client | Advised on an multi-year ESG regulatory risk screening, including gap analysis and prioritisation for emerging legislation in the UK, EU, Australia, Canada and the US..
- A leading UK provider of car and home insurance | Advised on the application of the Corporate Sustainability Reporting Directive to non-EU entities.
- A global rail operator | Advised on the ESG requirements in its supplier framework agreements.
- An engineering solutions group | Advised on the impact of changes to the GHG Protocol Guidance and the impact on virtual PPAs.
Latest thinking
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Risk Insight
The leading indicator: what the insurance market reveals about climate transition-plan credibility
September 04, 2026
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Business Insight
Australian Government publishes climate-related transition planning guidance
September 03, 2026
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Thought leadership
The New Data Center Playbook | Chapter 2: Managing Social Risk and Opportunity
August 05, 2026
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Legal development
EFRAG consults on proposed sustainability reporting standards for non-EU companies
July 30, 2026
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Legal development
EU adopts simplified ESRS and sustainability reporting standard for voluntary use
July 20, 2026
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Legal development
Governance & Compliance Update – Issue 84
July 09, 2026
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Legal development
Financial services speedread: 7 July 2026 edition
July 07, 2026
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Legal development
Ashurst Governance & Compliance Update – Issue 83
June 19, 2026
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Legal development
The basics of transition planning
May 14, 2026
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Legal development
The basics of transition planning
May 14, 2026
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Legal development
Ashurst Governance & Compliance Update – Issue 82
May 13, 2026
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Legal development
European Commission consults on revised ESRS and sustainability reporting standard for voluntary use
May 12, 2026
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