Dr Brian Halliday is a consultant cardiologist at Royal Brompton and Harefield hospitals and a clinical senior lecturer and British Heart Foundation intermediate fellow at the National Heart and Lung Institute, Imperial College London.

Dr Halliday completed his undergraduate training at University of Edinburgh before moving to London to continue his clinical training at Royal Brompton and Harefield hospitals and St George’s Hospital. He was awarded his PhD in 2018 and was also awarded a grant from the European Society of Cardiology to complete a part-time MSc in Clinical Trials at the Nuffield Department of Public Health, University of Oxford.

Dr Halliday is on the editorial board of the European Heart Journal and Circulation Cardiovascular Imaging and sits on the British Society of Heart Failure Research Committee as well as the Clinical Research Oversight Committee within Guy's and St Thomas' NHS Foundation Trust. He is an academic tutor for Imperial College London medical students and module lead on the cardiovascular intercalated BSc programme.

Areas of expertise

Dr Halliday has expertise in cardiomyopathy including:

  • Hypertrophic cardiomyopathy
  • Arrhythmogenic cardiomyopathy
  • Cardiovascular magnetic resonance
  • Heart failure in cardiomyopathies
  • Clinical trials

Research interests

Dr Halliday's research interests include:

  • Dilated cardiomyopathy
  • Clinical trials of therapies and strategies
  • Myocardial recovery and heart failure remission
  • Risk stratification for sudden cardiac death and selection of patients for implantable cardioverter defibrillators
  • Treatment of early forms of dilated cardiomyopathy

Dr Halliday's research interests focus on improving the treatment of patients with dilated cardiomyopathy at different stages of disease. He designed and conducted the British Heart Foundation (BHF)-funded TRED-HF trial and was first author of the primary publication in The Lancet. He presented the results at the Late Breaking Clinical Trial Sessions at the American Heart Association, 2018.

More recently he has received further funding from the BHF to perform a follow-on trial in patients with recovered dilated cardiomyopathy (TRED-HF-2), as well as a trial of a novel antioxidant (MitoQ) in patients with persistent dilated cardiomyopathy, as part of a prestigious BHF Intermediate Fellowship. Watch a video of Dr Brian Halliday talk about research on dilated cardiomyopathy.


  • 2022 – Young Author Award, American College of Cardiology and JACC Heart Failure
  • 2020 – Professor Sir John Strang Award for best cardiovascular publication
  • 2019 – National Heart and Lung Institute prize for best thesis
  • 2018 – Young Investigator Award, European Society of Cardiology Heart Failure Association
  • 2016 – Young Investigator Award, British Society of Heart Failure
  • 2008 – Murdoch Brown Silver Medal (2nd prize for Medicine) & Thomas Keith Memorial Prize (2nd prize for Surgery) (University of Edinburgh)


Dr Halliday has published over 60 papers in peer-reviewed journals. Visit the PubMed website for a list of Dr Halliday's publications.

Private patient referral

If you would like to make an appointment with this specialist for private care, contact the RB&HH Specialist care team