Helping organisations harness the value of authentic sustainability.

Working with organisations from a wide selection of industries, The Sustainability Agency specialise in two key areas: developing and delivering a best-in-class sustainability strategy, and deriving value from this transformation through comprehensive commercial and reputational outcomes.

Henry Staelens (Special advisor)

Having spent 2018-2023 as Chief Executive Officer of the ‘world’s greenest football club’, Forest Green Rovers, Henry has extensive knowledge in how progressive organisations can harness the value of authentic sustainability. He now holds the position as Chief Executive Officer of Ice Hockey UK, the national governing body for the sport and Great Britain national teams, where he aims to bring the environment to the top of the agenda once again.

Outside of this, Henry now works with clients through his Special Advisor role at The Sustainability Agency from various sectors to deliver world-class commercial strategy and outcomes.

Tristan Niesslein (Co-founder and sustainability lead)

Since 2019 Tristan started and ran Niesslein Sustainability Partners, providing support to multiple, global organisations on sustainability. Designing strategies, implementation programs and evaluation on all aspects of environmental and social sustainability particularly across sports. Tristan has deep experience in many critical disciplines to create ‘the authentically sustainable organisation’, supported with over 20 years of leadership experience in blue chip organisations, an MBA from WBS, and an MSt in Sustainability Leadership from CISL.

This knowledge and experience is brought to the clients of The Sustainability Agency for world-class sustainability programs.

The Sustainability Agency’s advisors have a wealth of knowledge and tangible success in transforming organisations.