Seabright said: “It has been an enormous privilege to lead the Eden Project, but after five and a half years I feel the time is now right for me to pass the baton on to my successor.
"We have built a resilient platform from which Eden can now deliver on its ambitious plans, both in the UK and internationally. I am immensely proud of the commitment of the Eden team to tackling the world’s environmental, educational and social challenges, and I look forward to the project’s continuing success.”
Eden Project chair Sanjeev Gandhi said: “During Gordon’s time as CEO he has brought stability and financial resilience to the Eden Project. We have seen annual visitor numbers return to beyond the million mark, grown the Big Lunch to over six million participants annually, signed landmark agreements to drill geothermal energy wells at Eden and created a new partnership with AEG Presents to run the Eden Sessions.
"Additionally, Gordon has managed the establishment of Eden Project Learning and the acquisition of the National Wildflower Centre. Gordon has set the organisation on the path to its next stage of development.
"His calm and assured leadership will be greatly missed and we wish him every success in his future endeavours. He will remain a lifelong friend of the Eden Project.”
Eden Project will begin a search for its next CEO immediately with interim arrangements announced shortly.