Manage sustainability as well as you manage finance.

Flagship helps organisations turn fragmented sustainability efforts into better decisions, stronger resilience and lasting business capability.

Trusted by leading organisations across Europe

50+leading organisations supported
10+years of experience
B CorpB Corp Certified
EcoVadisEcoVadis Training Partner

Complex challenges. One trusted partner.

Sustainability does not belong to a single department. It shapes strategy, finance, operations, procurement, legal, communications and investor relations.

Whatever challenge brings you here, we'll help you solve it with the right combination of expertise, practical implementation and technology.

We need audit-ready reporting.

From double materiality to ESRS disclosure and assurance preparation, we build reporting that stands up to scrutiny.

Reporting & Disclosure

We need reliable sustainability data.

Collect, validate and manage data across your organisation and supply chain through one structured systém.

Data & Platform

We need sustainability to support business strategy.

Embed sustainability into governance, risk management and investment decisions to strenghen long-term business resilience.

Strategy & Transformation

We need to reduce regulatory and communication risk.

Navigate evolving legislation, substantiate environmental claims and communicate your progress without increasing regulátory or reputational risk.

Compliance & Communication

We need to meet customer and supply chain requirements.

Improve EcoVadis performance, engage suppliers and build greater visibility across Scope 3 and wider ESG risks.

Supply Chain

Three capabilities. One trusted partner.

Everything you need to move sustainability forward.

Sustainability isn't a single project. It's an ongoing business capability.
Some organisations need strategic guidance.
Others need better systems and data.
Many need to build the internal knowledge to keep progressing long after a project is complete.
Most need all three.That's why Flagship brings together senior expertise, proprietary technology and continuous learning into one connected ecosystem—supporting your organisation from strategy to implementation and beyond.

Flagship
Sandra FelthamKaterina HavrlantJohn Newton

Senior Expertise

Powered by our professional team with core values

Every project is led by senior consultants who combine sustainability expertise with practical business experience.

We work directly with leadership teams and internal specialists to solve complex challenges, make informed decisions and turn regulatory expectations into practical action.

Meet our experts
Flagship Platform

Proprietary Technology

Powered by the Flagship Platform.

The Flagship Platform is the technology behind our consulting.

Developed through real client projects, it simplifies sustainability reporting, carbon-footprint calculation, supplier assessment and collaboration across organisations and corporate groups.

Explore the Flagship Platform
Flagship Academy

Continuous Learning

Powered by the Flagship Academy.

Knowledge shouldn't disappear when a project ends. The Flagship Academy helps your organisation stay capable as sustainability continues to evolve.

Through expert sessions, practical guidance, proven methodologies and accessible tools, your people can build knowledge, respond to change and apply sustainability confidently in their everyday work.

Discover Flagship Academy

Trusted by organisations that expect more.

Our clients don't come to us for reports. They come to us for better business outcomes.

Whether supporting investment decisions, preparing for new regulations, improving sustainability data or building long-term capability, we help organisations turn sustainability into practical business value.

17
Portfolio Companies

A unified approach to ESG and carbon management across an entire investment portfolio.

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50%
Faster Data Collection

Digital workflows that reduced reporting effort and improved data quality.

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€450M
sustainable financing

Supporting investment decisions with robust sustainability frameworks.

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Built on values

What we deliver matters. How we work matters just as much.

We believe sustainability creates the greatest value when it becomes part of better business decisions.

The result isn't just successful projects. It's long-term partnerships built on trust.

95%+
Client satisfaction
80%+
Revenue from long-term clients
95%+
Professionalism & integrity
Sandra Feltham
"After years of advising organisations, I realised the biggest challenge wasn't a lack of ambition—it was a lack of practical systems that made sustainability easier to manage."
Sandra Feltham
Founder & CEO | President, Business Leaders Forum

Let's build what's next.

Whether you're preparing for new regulation, strengthening your sustainability strategy or building internal capability, we'd love to hear what you're working on.

Let's start with a conversation about your business - and explore how Flagship can help you move forward.