The Team

Board (non-executive)

John Hassard, PhD, Non-exec Director

John HassardJohn co-founded deltaDOT with technology originating in the Department of Physics’ High Energy Physics Group at Imperial. He joined Imperial College as a lecturer in 1986 and remains on the faculty. Before Imperial College, John was a research fellow at Harvard University and Cornell University researching heavy quark decays. He was a special advisor to the House of Commons Select Committee for Science and Technology, and he also founded other spin out companies from Imperial College on physics-based technologies. John was Chief Executive Officer of deltaDOT in its early days and also of deltaDOT’s Qatar based sister company deltaDOT-QSTP LLC.


Board – (Executive Directors)

Nigel Stokes, M.Eng MBA, Managing Director

Nigel StokesNigel brings financial and legal expertise to deltaDOT, and has many years’ experience in running and advising SMEs. In addition to his MEng from Imperial College he also holds an MBA from London Business School. Nigel previously worked at deltaDOT from 2001 for several years as Company Secretary and Financial Controller.  In 2006, he set up a company based at Saint Mary’s Hospital which performs a novel form of non-invasive surgery to treat fibroids. The equipment was sold to the National Health Service in 2014 and investors received a 2x return. In 2010, he returned to deltaDOT by arranging a funding round which achieved a change in the management and a complete simplification of the company’s governance structures.

Stuart Hassard, PhD, CSO

Stuart HassardStuart co-founded deltaDOT, contributing his molecular biology expertise. He has a Ph.D. in Molecular Biology from the University of Essex, UK. His post-doctoral position was at the United States Department of Agriculture in their Plum Island Animal Disease Center in New York State, working on Foot-and-Mouth disease. He returned to the UK to work at the Department of Medicine at the University of Cambridge on the packaging signal of HIV-1. In 1999, he moved to the department of Biology in Imperial College London and subsequently to the Institute of Biomedical Engineering as a collaborating investigator. Stuart is also IP director for deltaDOT Ltd. and a member for the BBSRC grants assessment committee.



Gary Taylor, PhD, Head of Analysis

Gary TaylorGary is responsible for the implementation and development of algorithms which power deltaDOT’s instrumentation. He came to deltaDOT after his PhD at Imperial College in the field of High Energy Physics (CP violation in B meson decays). Techniques from high energy particle collisions have been adopted for deltaDOT HPCE used in PEREGRINE l.


Lesley Caldwell, PhD, Research Scientist


Lesley came to deltaDOT after completing her undergraduate degree in physics at London university. She rejoined recently following the completion of her MPhil and PhD from the University of Cambridge in the field of Biophysics and Neuroscience.