On 20 November 2014 we celebrated our 35th anniversary with over 400 senior figures from politics, civil society and business, with speeches from special guests Ed Miliband MP and Oliver Letwin MP. Click here to view coverage of the event.
We also launched Green Alliance's new 2015-18 strategy and announced our new chair, Dame Fiona Reynolds.
To mark our 35th birthday we asked 35 people to tell us what they have valued most about working with us, including politicians, former interns, our partners in business and the third sector and ex directors of Green Alliance. See what they said.