Mark has designed and delivered multiple award-winning buildings across all scales and many sectors, leading the integration of Penoyre&Prasad into Perkins&Will over the last four years. Increasingly he has focussed his design efforts on large scale retrofit projects - as one of the key necessary contributions of the profession in enabling a low carbon future. He is now at the early stages of establishing and scoping a new practice, less.eco, which seeks to identify a sustainable business model for encouraging and helping clients to build less, to use less, and to truly minimise their planetary and carbon impacts.