Director of Sustainability Marketing
Edited: 2 Mar 2026
6 min read
Climate leadership is becoming the benchmark for modern business, and B Corps are setting the pace.
From restaurants to retailers, telecoms to packaging innovators, certified B Corps are building climate action into how they operate and grow. For B Corps, that climate action includes reducing emissions, restoring ecosystems through high-integrity projects, and reporting progress transparently.
Here, we spotlight five leading B Corps and explore how their journeys point the way towards credible, science-based climate action.
These five case studies show B Corp sustainability examples in practice.
giffgaff - Mobilising community climate action
Focus: Restore our planet
As a certified B Corp, giffgaff has embedded purpose into the heart of its business model. Through its Up to Good Fund, the mobile network has brought together a collective of media owners and brands to fund climate projects, assessed through Ecologi’s Carbon Project Assessment Framework.
The initiative supports global restoration projects and engages giffgaff’s community in meaningful progress. It’s a strong example of how B Corp climate action can extend beyond internal operations and mobilise wider networks.
To date, the programme has funded thousands of climate solutions, helping to restore ecosystems and accelerate climate impact.
Tracey Herald, ESG Lead at giffgaff, said:
"The Up to Good Fund was conceived by giffgaff in collaboration with MG OMD and Ecologi, and the real goal of the fund was to essentially embed environmental responsibility into media and advertising."
By choosing to fund high-integrity carbon projects as part of a broader restoration strategy, giffgaff shows how B Corp climate action can bring partners along on the journey. Read the full giffgaff case study or watch our video below.
Mulberry - Engaging employees in climate leadership
Focus: Restore our planet
Luxury fashion brand Mulberry has long positioned sustainability at the heart of its operations. As a B Corp, it combines heritage craftsmanship with forward-thinking climate ambition.
Working with Ecologi, Mulberry has used climate action to build employee engagement and bring its sustainability story to life across the business. It’s created clear moments for people to take part in, strengthening understanding, ownership and momentum as the company works towards its wider net-zero goals.
Rosie Wollacott Phillips, Head of Sustainability at Mulberry said:
"Our partnership with Ecologi has supported employee understanding of our net-zero journey."
Through its partnership with Ecologi, Mulberry has already delivered measurable restoration impact by supporting nature-based projects around the world. This includes funding 1,388 trees, avoiding 1,310 tonnes of CO2e and removing a further 39 tonnes from the atmosphere.
By funding carefully assessed projects aligned to global standards, Mulberry is helping to protect biodiversity while keeping climate leadership visible and meaningful for its people.
Read the full Mulberry case study.
Hawksmoor - Reducing emissions with rigour
Focus: Reduce your emissions
For B Corp restaurant group Hawksmoor, climate leadership means measurement, action and a clear reduce emissions strategy. The business has been involved with the Sustainable Restaurant Association for more than a decade and continues to raise the bar within hospitality.
After setting a target to reach net zero by 2030, Hawksmoor began calculating its carbon footprint in detail. The data revealed where energy use was highest, where emissions were concentrated and where change would deliver the greatest impact.
Ellie Besley-Gould, Head of Purpose at Hawksmoor said:
"We've been heavily involved with the Sustainable Restaurant Association since about 12 years ago... It's a really important area for us to be stepping up the work in"
Armed with clear insight, Hawksmoor is now focused on reducing energy use, cutting waste and improving water efficiency across its restaurants. By understanding its footprint, the team can prioritise the changes that matter most and track progress over time.
It’s a great example of how B Corp climate action can translate into measurable emissions reduction in hospitality. Read the full Hawksmoor case study or watch our video below.
Deliberate - Putting the 3Rs into practice
Focus: Reduce your emissions, Restore our planet, Report your progress
Deliberate is a digital consultancy embedding climate leadership into its operations and decision making. In partnership with Ecologi, the team has integrated all three elements of the 3Rs Framework, reducing emissions, restoring nature and reporting progress with transparency.
The team used Ecologi Zero to measure its business carbon footprint and turn the results into a clear plan for action.
With a baseline in place, Deliberate has integrated sustainability into day-to-day operations. That includes formalising sustainable travel policies (with rail as the default), supporting employees to make greener choices in a remote working setup, and working more closely with freelancers to better understand and account for value chain emissions.
Alongside operational reduction, Deliberate funds high-integrity climate projects beyond its own footprint, building a Beyond value chain mitigation strategy that aligns with its emissions profile. The business has also published its emissions data, strengthening accountability and trust.
Laura Erses, Operations Director at Deliberate said:
"The Ecologi team have been great to work with and invaluable in helping us understand how to measure our business carbon footprint. This isn't something we would have been able to do ourselves. Our work with Ecologi has been a crucial step in our journey toward taking positive climate action."
By embedding Reduce, Restore and Report into one joined-up approach, Deliberate demonstrates how B Corp climate action can be structured, measurable and credible.
Read the full Deliberate case study.
BioPak - Scaling impact through restoration
Focus: Restore our planet
“A world without waste.” That’s the mission driving sustainable packaging company BioPak, and it drives everything from product design to climate action.
As a certified B Corp, BioPak commits 1% of its profits to community and environmental projects. Through its partnership with Ecologi, that commitment translates into tangible restoration impact. To date, the company has funded 102,479 trees, supporting large-scale reforestation and grassroots habitat restoration initiatives that help reverse biodiversity loss.
Sam Walker, Technical Director at BioPak UK said:
“It’s great to partner with Ecologi and support both the large scale reforestation projects they do and the more grass roots initiatives which really make a difference locally… Reforestation and habitat restoration are the foundations of reversing biodiversity loss and critical in the fight against climate change. We’re proud to work with Ecologi and share the impact data with our customers.”
BioPak actively shares its impact data with customers, making climate progress visible and accessible. By connecting every purchase to measurable environmental action, the business strengthens trust and invites its community to be part of the solution.
Together, this shows how B Corp climate action can combine commercial success, environmental restoration and customer engagement in one joined-up approach.
Read the full BioPak case study.
What these B Corp sustainability examples show about credible climate leadership
Across very different sectors, these organisations share common principles:
They measure their footprint and reduce emissions using clear, data-led strategies
They fund high-integrity climate projects that restore ecosystems and support communities
They report progress transparently and strengthen accountability
They embed climate leadership into long-term business strategy
Together, they show what credible B Corp climate action looks like in practice. Businesses that measure their impact, take responsibility for reducing emissions, invest in restoring nature and share their progress openly.
That’s how climate leadership moves from ambition to action.
Climate action for B Corps starts here
At Ecologi, we lead on climate, so you can lead in business.
Through our science-aligned climate strategy and our 3Rs Framework, we help B Corps and ambitious organisations to:
Reduce your emissions with clear measurement, target setting and practical action
Restore our planet by funding high-quality, high-integrity climate projects
Report your progress transparently in alignment with global guidance
We’ve supported over 17,000 businesses on their climate journey, helping them navigate complexity and unlock the commercial value of corporate climate leadership.
Whether you’re an established B Corp or working towards certification, we can help you embed the 3Rs Framework into your operations and strengthen your climate strategy.
Schedule a call with our team to explore how we can support your business, wherever you are on your journey.