It researches and recommends new environmental policy proposals, and works strategically, in alliance with other non-governmental organisations (NGOs) and businesses, on promoting greater political support for the environment.

Its ‘political leadership’ theme focuses on raising the ambition and commitment of politicians to act on climate and nature, highlighting the social and economic advantages of doing so.

Green Alliance hosts a blog and a podcast giving voice to organisations, opinion formers, experts and commentators on environmental issues.

It holds regular events, including hosting major speeches by senior ministers and political leaders, such as Tony Blair, Caroline Lucas, David Cameron, Al Gore, Nicola Sturgeon, Alok Sharma and Kwasi Kwarteng.

Notable individuals involved in Green Alliance's early years include Maurice Ash, Tim Beaumont, Tom Burke, Julie Hill and Rebecca Willis.

After the UK left the EU, the coalition continued to build on existing environmental standards and protections through its successful campaign for a new Environment Act and a focus on new trade agreements.

[2][3] Commenting on the work of Greener UK, steered by Green Alliance since 2016, the book Environmental groups and legal expertise: shaping the Brexit process, by Professor Carolyn Abbot and Professor Maria Lee (published in 2021 by UCL Press) said that “Greener UK has been a crucially important actor in the environmental NGO sector’s response to Brexit-environment.