Directors
Tommy Wiedmann is Director and Head of Research at the Centre for Sustainability Accounting. He develops methods and data for integrated sustainability accounting tools and manages the day-to-day activities of the company. He is also a Research Associate at the Stockholm Environment Institute in York, an Honorary Associate at the University of Sydney and an Honorary Fellow of the Institute of Green Professionals. Tommy's scientific interests are in the field of sustainable consumption research where he focuses on improving and applying carbon footprint and environmental input-output analysis. He was guest editor of the Special Issue 2009 of the journal Economic Systems Research on 'Carbon Footprint and Input-Output Analysis'. He is a member of the 'Methodology' Technical Working Group of the Greenhouse Gas Protocol Product/Supply Chain Initiative and of the Economic-Environmental Accounting Peer Review Panel of the Scottish Government. In 2009, he gave evidence before the Transport, Infrastructure and Climate Change Committee of the Scottish Parliament. Tommy holds a PhD in environmental and analytical chemistry from the University of Ulm, Germany.
	Dr. Tommy Wiedmann

John Barrett is a Director at the Centre for Sustainability Accounting and has been a Senior Research Associate since 2000 in the Stockholm Environment Institute at the University of York. His research topics relate to applied sustainability modelling and local sustainability issues. He has lead numerous projects for over 40 government agencies and is regularly advising DEFRA on issues related to sustainable consumption and production. John is an accomplished public speaker and an experienced policy advisor who has written numerous policy reports on SCP issues for a wide range of audiences including several Government Departments, the Welsh Assembly, the European Environment Agency, regional development agencies and over 40 local authorities.

Dr. John Barrett

Scientific Advisor
Manfred Lenzen was born and raised in the German Rhineland, and after completing a PhD in Nuclear Physics, moved to Australia where he took up work on renewable energy technologies at the University of Sydney. He is Professor of Sustainability Research at the Centre for Integrated Sustainbility Analysis (ISA) at the University of Sydney. Manfred is an international leader in economic Input-Output Analysis and Life-Cycle Assessment, and is Editor of the journal Economic Systems Research and Associate Editor for the Journal of Industrial Ecology. He has contributed major methodological advances as well as numerous applications, in particular on embodied energy and greenhouse gas emissions. At present, Manfred works on the development of quantitative methods for integrated sustainability assessment, notably Triple Bottom Line Accounting, the Ecological Footprint and Multi-Criteria Decision Analysis.
	Prof. Manfred Lenzen

carbon accounting

Scope 3 emissions

Scope 3 accounting

supply chain accounting

carbon in the supply chain

carbon emissions

emissions accounting

environmental accounting

supply chain carbon emissions

scope 3 carbon emissions

greenhouse gas emissions

Integrated Sustainability Analysis

sustainability research

sustainability accounting

consulting

triple bottom line

corporate sustainability

sustainability reporting

corporate responsibility

Ecological Footprint

carbon footprint

footprint

ISA UK

ISA consultancy

ISA consulting

censa