Dr P Boon Lim

Consultant Cardiologist and electrophysiologist specialising in heart rhythm disturbances, pacing and syncope at Imperial College NHS Trust. Specialist interests include postural orthostatic tachycardia syndrome (POTS) and the treatment of syncope.

Speciality Cardiology Sub Speciality: Cardiac Electrophysiology - Arrhythmias, Pacing and Syncope

NHS Hospital Positions

Consultant Cardiologist and Clinical Lead for the Imperial Syncope Diagnostic Unit
Imperial College Healthcare NHS Trust

  • Honorary Senior Lecturer, Imperial College London
  • Visiting Cardiologist at the West Middlesex University Hospital NHS Trust

Clinical Interests

Dr P Boon Lim is an experienced and dynamic electrophysiologist and cardiologist specialising in heart rhythm disturbances, pacing and syncope. Based in London at Imperial  College NHS Trust he performs ablation for atrial and ventricular arrhythmias, both simple and complex arrhythmias,  and implantation of pacemakers and defibrillators.

Dr Lim has a special interest in mapping and ablation of atrial fibrillation, and is currently actively researching techniques for modulating the autonomic nervous system to treat atrial fibrillation and vasovagal syncope. He also works closely with industry to develop and refine mapping techniques to enable the best possible treatment of atrial fibrillation and ventricular ectopy. Dr Lim is highly skilled at using these complex 3-D mapping technologies to treat these common arrhythmias, and is an early adopter of novel techniques with close working relationships with the medical devices industry, and was one of the first in the world to use the Cardioinsight multi-electrode ECG vest to treat ventricular arrhythmias. Dr Lim performs ablations at the Sainsbury’s Wing at Hammersmith Hospital, the Cromwell Hospital and has consultations at the London Cardiovascular Clinic at 66 Harley Street.

Education and Training

Dr Lim graduated from Cambridge University with a Double First Class in 2000 obtaining several prizes including the Michelle Prize for Medicine, the Hoechst Marion Rousell Prize and the Sir Richard Stapley Scholarship. He was awarded MRCP in 2003. He undertook junior medical training at Kings College London and the Royal Brompton Hospital, before commencing Cardiology training at top tertiary centres including Oxford and Northwest London at St Mary’s and Hammersmith Hospitals.

In 2007, he was awarded a Clinical Research Training Fellowship by the British Heart Foundation to complete a PhD at Imperial College London looking into the autonomic mechanisms of atrial fibrillation. Dr Lim then pursued a clinical fellowship at the Heart Hospital, University College London for a year, before being appointed as a consultant cardiologist at Hammersmith Hospital within the Imperial College Healthcare NHS Trust.

Dr Lim also conducts regular specialist arrhythmia clinics at the West Middlesex University Hospitals NHS Trust and Harley Street.

Consultant Appointments

Dr P Boon Lim was appointed Consultant Cardiologist/Electrophysiologist in 2013, having been acting consultant since 2011, at the Imperial College Healthcare NHS Trust, and is currently based at Hammersmith and St Mary’s sites in London. He is the clinical lead for the Imperial Syncope Diagnostic Unit based at Hammersmith Hospital.


Dr Lim completed a PhD in clinical electrophysiology at Imperial College London. His research focused on exploring the role of the autonomic nervous system in human atrial fibrillation. He has been awarded several prizes for his outstanding research into Atrial Fibrillation (AF) including the President’s Medal for Cardiology at the Royal Society of Medicine, the Lindo Foundation Prize at St Mary’s Hospital, and being Runner-up in the Young Investigator Award for the British Cardiovascular Society, and Asia Pacific Heart Rhythm Society Meetings.

Since completing his PhD, Dr Lim has continued to be actively involved in research at the National Heart and Lung Institute, Imperial College London, and is supervisor for several PhD students. As the clinical lead for the Imperial Syncope Diagnostic Centre, he is regularly invited to speak on syncope at National and International meetings, and is actively involved in setting up a multidisciplinary approach for treatment of patients with syncope and postural orthostatic tachycardia syndrome.

He continues to explore novel aspects of ablation and is currently exploring the role of ablation of the autonomic nervous system as a treatment strategy to treat certain forms of atrial fibrillation, and vasovagal syncope. He is committed to developing better and safe techniques to better treat patients with atrial fibrillation and syncope.

He supervises 3 current PhD students, and is author of over 40 publications and has been invited to present his work at both national and international meetings, with over 100 abstracts.

Dr Lim’s research profile can be viewed on : www.imperial.ac.uk/people/p.b.lim


Training Roles

Dr Lim is actively involved in training and education, and lectures in various electrophysiologist courses both nationally, and internationally, including the BMJ Masterclass sessions for GP and junior doctors on arrhythmias and syncope. He is also a lecturer at the Imperial College undergraduate BSc module in cardiology.


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