About us

Thin Green Line is the first charity solely dedicated to supporting rangers and their families.

About us

Thin Green Line is the first charity solely dedicated to supporting rangers and their families.

Be part of our story

Thin Green Line was founded by award-winning conservationist and former ranger Sean Willmore. His acclaimed documentary The Thin Green Line offered a sense of hope and pride for rangers worldwide and became the catalyst for Sean to set up Thin Green Line.

Our team

Thin Green Line is a global not-for-profit organisation that exists to support park and wildlife rangers in their fight for conservation. Our people are diversely qualified and passionately committed to this cause.

Our rangers

Rangers play a vital role in their communities by protecting wildlife, plants, biodiversity, and therefore the environment and the economy. Being a ranger is more than a job – it’s a calling to protect the natural world and its inhabitants.

Our board

Our board acknowledges that by supporting rangers we also support the communities in which they live, delivering social and economic benefits for the greater good.

Publications and resources

Browse our archive of resources, including annual and strategic reports and other relevant publications.

Want to support rangers on the frontline of conservation?

We believe the practical, direct action of rangers is the most necessary and effective way to overcome the environmental challenges of our time. Thin Green Line is a global not-for-profit conservation organisation.

Sign up and stay connected

Stay up to date with our impact, events, and opportunities to get involved.