Professor Thomas McLeish FRS

Tom McLeish was a theoretical physicist whose work is renowned for increasing our understanding of the properties of soft matter. This is matter that can be easily changed by stress — including liquids, foams and biological materials.


Although Tom's work was mostly theoretical, he also worked closely with those performing experiments and in industry. He made significant advances in modelling the structure and properties of complex entangled molecules, blends of substances that don't usually mix (like oil and water), and modelling micro-structures under flow. This allows us to more easily predict complex fluid behaviour and processing in an industrial setting.


He was the Director of the UK Physics of Life Network, a research-council funded collaboration of physical and life scientists building research across disciplinary divisions. Tom's other interests as Professor of Natural Philosophy in York University's Physics department included the philosophy and theology of science as well as historical studies of medieval science. He was a member of York's Centre for Medieval Studies and the author of Faith and Wisdom in Science (OUP 2014) and The Poetry and Music of Science (OUP 2019).

Professor Tom McLeish FRS died on 27 February 2023.

Professional position

  • Former Professor of Physics, Department of Physics, Durham University
  • Senior Associate, Pembroke College, University of Oxford

Subject groups

  • Astronomy and Physics

    Statistical, Biophysics, Condensed matter incl softmatter, liquids, nano-materials

  • Mathematics

    Applied mathematics and theoretical physics

  • Chemistry

    Chemistry, physical

  • Engineering and Materials Science

    Materials science (incl materials engineering)

  • Molecules of Life

    Biophysics and structural biology

  • Patterns in Populations

    Evolution, Biological modelling

  • Other

    History of science, Public understanding of science, Science policy, Other interests

Committees Participated Role
Everyone’s a scientist Working Group January 2019 - February 2023 Chair
Council December 2018 - November 2021 Member
Library Committee January 2016 - December 2018 Member
Education Committee March 2014 - December 2019 Chair
Sectional Committee 2: Astronomy and physics December 2013 - November 2016 Member