Clarion: Delivering sustainable impact in the legal sector

Clarion, one of the UK’s fastest-growing and most progressive law firms, is taking bold steps to lead on ESG and net zero. Through a strategic partnership with Flotilla, Clarion is combining data-led carbon reporting with people-first engagement to embed sustainability across its entire organisation.

Why ESG is a strategic priority for legal firms

The legal sector faces growing pressure to demonstrate ESG credentials, from regulatory expectations to client RFPs. For Clarion, sustainability is more than a compliance issue, it’s a long-term strategic imperative.

With over 300 staff, a presence in 75+ countries, and multiple workplace awards, Clarion recognised the value of aligning its culture with climate action.

The Challenge: Carbon data, reporting & ESG structure

Clarion had already launched internal initiatives like charity work and sustainability champions. However, it lacked:

• A clear method for capturing and reporting carbon data
• Department-level visibility on emissions
• A cohesive ESG reporting structure tied to business planning

The Solution: Flotilla’s Net Zero platform + advisory

In 2022, Clarion partnered with Flotilla to formalise its sustainability strategy. The focus was on data, people, and governance.

1. Carbon Data and Reporting

• Implemented Flotilla’s Net Zero Platform for seamless data capture
• Delivered a detailed, department-wide Carbon Report
• Outlined key reduction opportunities across scopes 1–3

 2. Employee Engagement

• Ran staff-wide carbon footprint surveys
• Held firmwide briefings and internal Q&As
• Launched the internal Being Green group

3. ESG Strategy and Governance

• Built ESG into board discussions and bi-annual departmental updates
• Included sustainability metrics in annual reporting
• Created accountability structures to maintain momentum

Results: A more sustainable, data-driven law firm

Clarion has already seen measurable progress:

• Better data accuracy and a baseline to track emissions
• Increased staff engagement and ownership of sustainability goals
• Stronger positioning in client tenders and regulatory alignment

“Without Flotilla, we would never have been able to analyse carbon usage across our business… The Carbon Report was detailed, action-driven, and helped us get started right away.”— Jenny Rennocks, Head of Marketing, Clarion

What’s Next: Clarion’s future ESG roadmap

With Flotilla’s support, Clarion is taking its sustainability strategy further by:

• Partnering with suppliers to address Scope 3 emissions
• Upgrading office energy policies and commuting practices
• Embedding sustainability in governance and leadership
• Switching to renewable energy and improving efficiency

Learn More: Get the full case study

Want to dive deeper into Clarion’s journey? Download the full PDF version, you can find the button at the top of the page, for implementation details and key takeaways

 Explore Flotilla’s Services

If you’re a legal or professional services firm looking to accelerate your ESG and net zero strategy, we can help. Schedule a personalised demo: Contact us | Zero is Everything | Flotilla