2023 speakers included:

Yetunde Abdul, head of climate action, UKGBC

Peter Barber, founder, Peter Barber Architects

Sian Berry, Londonwide Green assembly member, London Assembly

Tor Burrows, group sustainability director, Grosvenor

John Christophers, principal/member, zero carbon house / Retrofit Balsall Heath

Nuno Correia, head of sustainability, WilkinsonEyre

Graeme DeBrincat, associate, Arup

Sara Edmonds, co-director, National Retrofit Hub

Rufus Grantham, co-founder and partner, Living Places

Jonathan Hagos, architect/director, Freehaus

Kenichi Hamada, associate director, Buro Happold

Mellis Haward, director, Archio

Tania Jennings, net zero carbon manager, London Borough of Lewisham

Armandeep Kalra, associate director, Be First

Teni Ladipo, associate facade consultant, Buro Happold

Annalie Riches, founding director, Mikhail Riches

Chris Skidmore, chair of the net zero review, MP for Kingswood

Charlie Wedgwood, head of carbon, McGee