Zero Hour is proud to work with many inspiring figures helping to advance urgent, joined-up action on climate and nature. Today, on International Women’s Day 2026, we’re spotlighting some of the incredible women and allies who support Zero Hour and help lead the movement to drive meaningful change—from politicians, scientists, and youth activists to leaders and grassroots campaigners.
Women have consistently been sidelined during top international negotiations including at COP29 where women made up only 1 in 4 of countries' delegations and only 4 out of 17 UNFCCC bodies had 50% or more women, with some falling below 10%.
Despite this systematic underrepresentation on the world's biggest stages, women and girls are disproportionately impacted by nature loss and the climate crisis. Women have higher mortality rates during natural disasters; are more likely to be displaced; are at highest risk of poverty due to climate change and most directly impacted by food poverty when nature breakdown threatens food security.
That is why their voice in shaping the urgent action required is so integral to delivering the solutions and it’s thanks to women that many international and national agreements have progressed. Whether it’s Christina Figueres chairing UNFCCC to deliver the historic Paris Agreement alongside Laurence Tubiana, Mia Mottley warning of the real risk of a billion of climate refugees or Sherry Rehman pushing urgent need for loss and damage payments to help communities most directly impacted by climate breakdown.
Leading voices are working with Zero Hour to deliver the urgent climate and nature legislation we need because currently we are off-track, underdelivering and feeling the consequences—whether it’s the cost on our energy bills, cost of food or health impacts, here in the UK. It is thanks to female leaders that the urgency of the crisis remains in the public eye and we are proud to work alongside these leaders calling for a fairer, greener future for all.
🌿 Caroline Lucas
As the first MP to introduce what has evolved into the Climate and Nature Bill, Caroline Lucas has consistently pushed for bold, science-led legislation to address both the climate emergency and the biodiversity crisis in the UK. Her decades of political leadership and commitment to environmental justice have inspired countless others to stand up for nature and climate action.
🌍 Climate and Nature Crisis Caucus—Chair and Vice-Chairs
We are proud that Zero Hour’s new cross-party Climate and Nature Crisis Caucus is led by Olivia Blake MP as Chair, alongside Vice-Chairs Carla Denyer MP, Roz Savage MP, Pippa Heylings MP and Nadia Whittome MP. These women are championing stronger action on climate and nature, and fighting everyday in Parliament to keep the most important issue of our time at the top of the political agenda.
🐝 Tori Tsui
Tori Tsui is a climate justice activist and writer who brings intersectional urgency to the climate debate. Her work highlights the deep connections between social justice, wellbeing and environmental action. Through campaigning, storytelling and advocacy, she encourages a more inclusive approach to climate activism.
🌸 Domi Palmer
Dominique Palmer is a climate justice advocate, writer and speaker whose work highlights the voices of those most impacted by environmental inaction. She campaigns for climate solutions that centre equity, inclusion and global justice. Through her activism and public speaking, she inspires young people to push for ambitious and fair climate action.
🌿 Dame. Prof EJ Milner Gulland
E.J. Milner-Gulland is a leading conservation scientist and Professor of Biodiversity at the University of Oxford, whose work focuses on ensuring nature is properly valued in decision-making. A champion of evidence-based policy, she works to bridge the gap between research and real-world action to tackle biodiversity loss. Her expertise strengthens the scientific foundation of the Climate and Nature Bill and underscores the urgency of restoring the natural world.
🐝 Mya-Rose Craig
Known widely as Birdgirl, Mya-Rose Craig is an ornithologist and activist who founded Black2Nature to expand access to nature for marginalised communities and has used her platform to push for greater biodiversity protection and inclusivity in environmental spaces.
🌸 Joycelyn Longdon
Joycelyn Longdon combines community leadership with environmental activism, shining a light on equitable climate solutions that work for both people and the planet. As an environmental justice researcher, writer and storyteller, she explores how climate action can be more inclusive and socially just. Her work helps amplify grassroots voices and ensures they are heard in national conversations about climate and nature.
🌿 Prof. Nathalie Pettorelli
Nathalie Pettorelli is a recognised conservation scientist whose research informs policy and action on biodiversity loss. Her expertise strengthens the scientific foundation of the Climate and Nature Bill, and by bridging gaps between data and meaningful legislative change, she ensures that biodiversity protection is grounded in evidence and effective for real-world impact.
🐝 Clover Hogan
Clover Hogan is an environmental activist and storyteller whose work spans public speaking, educational initiatives and grassroots climate organising. She amplifies the urgency of protecting nature through creative campaigns and community engagement.
🌸 Deborah Meaden
Renowned entrepreneur Deborah Meaden uses her platform to advocate for sustainability and nature-positive policies, encouraging businesses and individuals to support legislation that benefits the UK’s economy and ecosystems.
🌿 Char Love
Char Love co-founded B Lab UK, playing a pivotal role in growing the UK’s B Corp movement and championing businesses that balance profit with purpose. Through her work across business, activism and education, she encourages organisations to step up and drive meaningful systems change for people and planet.
🐝 CAN Bill campaigners, Sarah and Michaela!
Our campaign is powered by passionate grassroots supporters like Sarah and Michaela, who bring energy and dedication to the Climate and Nature Bill campaign. From campaigning outside Parliament, attending conferences, and helping grow and mobilise the Zero Hour community, they play a vital role in turning public support into real action. We wouldn’t be where we are today without committed campaigners like them, working tirelessly to keep climate and nature at the heart of the conversation. Thank you!
