Dr John Malcolm Walker, Cardiologist

Clinical Lead Cardiology UCLH.

Founded the Hatter Cardiovascular Institute in 1989 (aided by donation from a grateful patient).
The Hatter Cardiovascular Institute has a scientific director (D. Yellon) with more than 25 researchers and publishes widely; specialising on the science behind the ability of the heart to protect itself from damage during heart attacks (more than 600 peer reviewed articles within the last decade).

Established in 1997 the Cardiac Centre for Diseases of Haemoglobin “Red Cell Cardiology” at UCLH and the Hatter Cardiovascular Institute.
International recognition as an expert in the heart complications of inherited diseases of the blood, specifically Thalassaemia and Sickle Cell Anaemia.

Consultant lead for Cardiovascular Health and Rehabilitation Services for UCLH, and past president of the British Society of Cardiovascular Prevention and Rehabilitation (BACPR).

Established in 2015 the Cardio-Oncology Service at UCLH.

- Consultant Cardiologist: University College Hospital, London
- Clinical Lead, Cardiology, UCLH
- Founder and Clinical Director: The Hatter Cardiovascular Institute, University College, London
- Hon. Consultant Cardiologist: King Edward VII Hospital for Officers, London
- Hon. Clinical Senior Lecturer: University College, University of London

Dr John Malcolm Walker is a Consultant Cardiologist at University College Hospital (UCH) with over 30 years of experience in clinical medicine and cardiology. In 1990, three years after his appointment at UCH, he founded the Hatter Cardiovascular Institute (HCI) where he later established The Thalassaemia and Sickle Cardiac Centre, the world’s first cardiac service of its kind. He has internationally-recognised expertise in specialised areas of cardiovascular (CV) medicine including CV effects of haemoglobin disorders, mainly thalassaemia and sickle cell disease, CV effects of cancer and its treatment, CV rehabilitation and prevention, and CV consequences of iron overload.

He undertook his medical degree at University of Birmingham Medical School, graduating with honours in pre-clinical sciences before undertaking training in clinical cardiology at St. Thomas’ Hospital, London and at the University of Oxford.

Dr John Malcolm Walker has many widely-published articles in medical and scientific journals and has made contributions to numerous book chapters, including authorship of the cardiovascular disease chapters of a major English language textbook of medicine.

In his spare time, he enjoys walking and cycling, national history, fly fishing with his son (an avid fisherman) and restoring boats.

Complex adult cardiovascular disease.
Cardiovascular complications of inherited diseases of haemoglobin & of iron overload.
Cardiovascular complications of cancer and its treatment (cardio-oncology).
Cardiovascular Rehabilitation.