John Whitaker

Clinical senior lecturer and honorary consultant in cardiology and electrophysiology


John Whitaker has been an honorary consultant in cardiology, electrophysiology and devices at Guy's and St Thomas' NHS Foundation Trust since 2023. He is also a clinical senior lecturer.

He has experience in the assessment and management of heart arrhythmias, with a particular interest in ventricular arrhythmias.

Education and training

  • Post-Certificate of Completion of Training Fellowship in clinical cardiac electrophysiology, Brigham and Women's Hospital and Harvard Medical School, United States of America, 2020 to 2022
  • Cardiology and sub-speciality electrophysiology and devices training, Guy's and St Thomas' and King's College London, 2018 to 2020
  • Clinical Research Training Fellowship, Medical Research Council, 2015 to 2018
  • Visiting Research Fellowship, Beth Israel Deaconess Medical Centre and Harvard Medical School, United States of America, 2016
  • PhD, King's College London
  • Clinical Research Training Fellowship in translational research, biomedical research centre at Guy's and St Thomas', 2014 to 2015
  • Cardiology speciality training, south east region London Deanery, 2011 to 2014

Research interests

Assessment of the substrate underlying ventricular arrhythmias, including:

  • new signal processing techniques for intra-cardiac electrograms
  • the assessment of heart structural features predisposing to arrhythmias using 3-dimensional imaging including cardiac CT and MRI


  • 'Hemodynamically compromising VT assessed under hemodynamic support depends on functional conduction properties of borderzone tissue' among top 6 highest scoring abstracts, European Heart Rhythm Association, 2018
  • Essay Prize, Institute of Medical Ethics Foundation Doctors, 2008
  • Proxime Accesit for the Margaret Harris prize, awarded to the top 9 graduates from University of Oxford Clinical School, 2006
  • Merit for performance in medical finals, University of Oxford Clinical School, 2006
  • The Helena McNally prize for presentation at the University of Oxford Clinical School Electives Conference, 2006
  • Trinity College graduate progress prize, 2005
  • Elected into a Senior Exhibition in recognition of performance in medical (MVST) examinations, Emmanuel College, University of Cambridge, 2002
  • Elected into a Senior Exhibition in recognition of performance in MVST examinations, Emmanuel College, University of Cambridge, 2001

Last updated: March 2023

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