Tadj Oreszczyn MCIBSE MInstE, PhD, CEng is the Director of The Bartlett School of Environment, Energy and Resources (BSEER), Director of the RCUK Centre for Energy Epidemiology (CEE) and Professor of Energy and Environment at the UCL Energy Institute, University College London. Prior to becoming the Director of BSEER in August 2014, Tadj was the founding Director of the UCL Energy Institute.

Before becoming Professor, Tadj was the Director of the Energy Design Advice Scheme (EDAS) regional office based at the Bartlett, UCL. Subsequently, Tadj was Head of the Bartlett School of Graduate Studies for 7 years, and for 4 years, Vice Dean Research for the Bartlett Faculty of the Built Environment. Tadj has provided research support for the development of the English and Welsh Building Regulations. He has presented invited public and academic lectures at the Royal Society and the Royal Institution.

Tadj is a member of the UK Department of Energy and Climate Change Scientific Advisory Group and and has advised the Energy Efficiency Deployment Office at DECC. Tadj is a trustee of the Sustainable Energy Academy, a member of the Advisory Board of the National Energy Foundation, a member of the NHBC Expert Panel, and a member of EDGE an inter-institutional ginger group involving CIBSE, ICE, RIBA, IStructE and the RICS which seeks to promote interdisciplinary co-operation between construction professionals. Tadj is a Fellow and a Vice President of CIBSE and sits on the CIBSE Board.