Chris Twinn set up his own specialist practice 9 years ago after 28 years at Arup, latterly as Arup Fellow and director. He delivered his first zero carbon development more than 25 years ago and brings a wealth of experience in practical design, construction, and policy, from years working around the world. Chris is an EDGE think-tank core member, LETI member, Sustainable Development Foundation board member, Net Zero Carbon Buildings Standard Governance Board member, Honorary Fellow of the RIBA, a CIBSE Fellow and on CIBSE publication and special interest groups.

Chris Twinn leads the LETI Retrofit-2 workstream due to publish a new guide on “Retrofit at scale: how Many, how Deep, at what Cost” later this year.