Operation Noah was founded in 2004 by Christian Ecology Link (CEL), with its official launch in October that year. It later became a joint project of CEL and the Environmental Issues Network of Churches Together in Britain and Ireland, and gained charitable status in 2010. In October 2009, the then
Archbishop of Canterbury,
Rowan Williams, gave the Operation Noah Annual Lecture at
Southwark Cathedral, speaking on 'The Climate Crisis: A Christian Response'. In February 2012, Operation Noah launched
The Ash Wednesday Declaration, a theological response to climate change. The document was signed by a number of prominent Christian leaders, including Archbishop Desmond Tutu and Rowan Williams. In September 2013, Operation Noah launched Bright Now, a campaign for UK church disinvestment in fossil fuel companies. In November/December 2013, Operation Noah was a partner on the Fossil Free UK Tour along with People & Planet and 350.org. The most notable fossil fuel divestment occurred in 2023 when the Church of England's National Investing Bodies, which include the Church Commissioners and the Pensions Board, announced that they would divest from all fossil fuel companies – a commitment which made international news. In December 2025, Operation Noah announced that the Diocese of Chichester had divested, the final Church of England diocese to do so. ==Activities==