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Dr Alexander Lyon

MA BM BCh PhD FRCP FHFA

Cardiologist

27 years of experience

London, W1G 8BJ

(+3 more)

24 connections in healthcare

Skill endorsed

by Dr Niall Keenan

4.98

/5

(155 reviews)

27 years of experience

London, W1G 8BJ

(+3 more)

24 connections in healthcare

Skill endorsed

by Dr Niall Keenan

Areas of expertise

All
Reviews
Skill Endorsements
Echocardiogram
38
High Blood Pressure
37
ECG (Electrocardiogram)
33

Contact

Book


Expert in:

About Dr Alexander Lyon

Dr Alexander Lyon is a senior lecturer and consultant cardiologist at Royal Brompton Hospital, where he is also the clinical lead for the cardio-oncology service. He sees patients with symptoms such as chest pain, breathlessness, palpitations, and dizziness.

He has expertise in:

  • Heart failure
  • Cardio-oncology
  • Chemotherapy-induced heart failure
  • Takotsubo syndrome
  • Cardiac gene therapy
  • Hypertension
  • Heart valve disease
  • Coronary artery disease
  • Cardiomyopathy
  • General cardiac health checks

He also holds a specialist clinic for patients with Takotsubo syndrome, which focuses on risk prediction and the management of refractory symptoms.

Dr Lyon studied medicine at the University of Oxford, where he gained a first-class degree in physiological sciences in 1995, achieving second place in the final honours school. He qualified at the John Radcliffe Medical School in 1998 before training as a junior doctor in cardiology in the UK and Australia.

He then joined the cardiac medicine research group of Professor Sian Harding and Professor Philip Poole-Wilson, where he examined the effect of cardiac gene therapy on ventricular arrhythmia generation. He was awarded an MRC Clinical Research Training Fellowship in 2005 and later undertook a PhD at Mount Sinai School of Medicine, New York, where he studied the spatiotemporal patterns of mitochondrial function.

He is currently chair of the UK Cardio-Oncology Consortium and a member of the Heart Failure Association Translational Research Committee.


Subspecialties

  • Heart Muscle Disease/Cardiomyopathy

Areas of expertise

All
Reviews
(286)
Skill Endorsements
(2)

Click the bar to read reviews or skill endorsements

Echocardiogram
38
High Blood Pressure
37
ECG (Electrocardiogram)
33
Arrhythmia (Irregular Heartbeat)
28
Chest Pain
23
1
Palpitations
17
Cardiac MRI (CMR)
12
Dizziness
11
Cardio-Oncology
10
Heart Failure
9
Takotsubo Syndrome
9
Atrial Fibrillation
8
ECG Holter Monitor
7
Coronary Artery Disease
6
Exercise Stress Test
5
Myocardial Perfusion Scan
4
24 Hour Blood Pressure Monitor
4
Heart Attack
2
1
CT Coronary Angiogram
3
Long COVID
3
Tachycardia
2
Heart Valve Problems
2
Cardiomyopathy
2
Pericarditis
2
High Cholesterol
1
Low Blood Pressure
1
Angina
1
Hypertrophic Cardiomyopathy
1
Bradycardia
1
Calcium Coronary Score
1
Heart Murmurs
1
Supraventricular Tachycardia (SVT)
1
Heart Blocks
1
Atherosclerosis
Cardio-Pulmonary Exercise Testing
Congestive Heart Failure
Heart Muscle Disease
Pulmonary Hypertension
Valvular Heart Disease

Registered with

General Medical Council

No. 4530330


Qualifications

Primary Medical Qualification

BM BCh 1998 Oxford University

Specialist Register entry date

Cardiology From 01 Jan 2012

Awards

  • The inaugural Bernard and Joan Marshall Young Investigator Prize from the British Society for Cardiovascular Research (2010)
  • The British Cardiovascular Society Young Investigator Competition Winner (Basic Sciences) (2009)
  • The Medical Research Society Raftery Prize in Cardiovascular Sciences Winner (2008)
  • The European Meeting of International Society of Heart Research Best Scientific Poster Prize (2008)
  • The Royal Society of Medicine Cardiology Section President's Medal Winner (2007).

Languages spoken

  • English

Insurers

  • AXA Health
  • Bupa Fee Assured
  • Bupa
  • Aviva Health
  • Saga Health Insurance
  • Freedom Health Insurance
  • Benenden Health
  • The PHC
  • Aetna
  • The Exeter
  • Simply Health (Dental)
  • Healix Health Services
  • Cigna
  • WPA
  • Allianz Worldwide Care
  • Vitality

Fees

  • New appointment

    £400
  • Follow-up appointment

    £300
*May vary on location

Locations

HCA Healthcare UK The Harley Street Clinic

35 Weymouth Street, London, United Kingdom, W1G 8BJ

4.75(3274 reviews)

Opening hours

Monday - Friday
Saturday
Sunday

Facilities

Paid Parking
View practice profile

Opening hours

Monday - Friday
Saturday
Sunday

Facilities

Paid Parking
View practice profile

The Physicians' Clinic London

13-14 Devonshire Street, London, United Kingdom, W1G 7AE

4.87(444 reviews)

Opening hours

Monday - Friday
Saturday
Sunday

Facilities

Wheelchair Accessible
View practice profile

Wimpole Street Consulting Rooms and Diagnostic Centre

77 - 79 Wimpole Street, London, United Kingdom, W1G 9RU

4.92(415 reviews)

Opening hours

Monday - Friday
Saturday
Sunday

Facilities

Wheelchair Accessible
Paid Parking
View practice profile

Royal Brompton Hospital Private Consulting Rooms

Sydney Street, London, United Kingdom, SW3 6NP

4.84(170 reviews)

Opening hours

Monday - Friday
Saturday
Sunday

Facilities

Paid Parking
View practice profile

Areas of expertise

All
Reviews
Skill Endorsements
Echocardiogram
38
High Blood Pressure
37
ECG (Electrocardiogram)
33

Contact

Book

Reviews

AI Review Summary

This summary was created by AI based on recent reviews

Dr Alexander Lyon consistently provides professional, reassuring care and clear communication. He is knowledgeable and thorough, explaining complex medical information in an understandable way. Patients feel confident and at ease under his care, appreciating his empathetic approach and effective treatment plans. Patients frequently seek Dr Lyon's expertise for high blood pressure, irregular heartbeat, and chest pain, often undergoing echocardiograms or electrocardiograms for comprehensive cardiac assessment.

5
verified patient
16 May 2026

I thought Dr Lyon was really excellent. Very pleased to have been referred to him. I find hospital settings and appointments incredibly stressful due to having been an immunotherapy cancer patient for many years at the Marsden. Dr Lyon however quickly put me at ease and I liked his calm, thoughtful, gently humorous and kind manner - he quickly created a sense of trust for me. On the medical front his clear communication and considered guidance was much valued by me. I feel like I'm in very good hands with him. Thank you.

Patient seen for:
5
verified patient
01 May 2026

Dr Lyon has been very thorough in investigating the reason behind my recent symptoms which resulted in an MRI showing that I had had a small heart attack. He provided very clear explanations regarding my condition. He was also very fast to react when I had a problem with a reaction to the medication prescribed and has communicated quickly a plan for further investigations. This altogether has given me reassurance that my problem is being dealt with efficiently and professionally.

5
verified patient
20 Mar 2026

Thank you. So helpful. And gave us the time and results very quickly. Feel safe with him.

Patient seen for:
5
verified patient
18 Oct 2025

Fine , see previous comments

5
verified patient
07 Sep 2025

Dr Lyon gave Philip great encouragement that he could make him feel better. He listened to the symptoms and quickly got further tests and scans sorted which were all done the same day. He kindly telephoned that same evening with the results and a further plan of treatment.

Patient seen for:
5
verified patient
07 Sep 2025

This was a 6 monthly follow-up with Dr Lyon. He talked me through the results of tests I had had a few days before. As a result he altered the drugs I take and asked me to have blood tests in 2 weeks time. Dr Lyon is a superb professional and I have every faith in him.

5
verified patient
07 Sep 2025

This was my first time of meeting him. He instantly put me at ease. He was very amiable, seemed genuinely interested in my journey. I liked him

Patient seen for:
5
verified patient
15 Aug 2025

Highly professional

Patient seen for:
5
verified patient
14 Aug 2025

Dr Lyon is an exeptional cardiologist. He listened to my concerns, identified the rigth treatment, and truly cares about his patients. Thank you!

Patient seen for:
5
verified patient
12 Aug 2025

This was my second visit to see Dr Lyon. The first visit was a special consultation because he at once put me at ease.. He was so clear about what he wanted to achieve in the investigations. The follow-up was just as good when explained the results and what if anything needed to be done. I was so impressed. Perhaps one of the best medical consultations I have ever had. Such an expert in his field!

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Skill Endorsements

Dr Lyon is one of the world's leading experts in cardio-oncology and an excellent colleague. The European guidelines he led on have made a major difference for countless patients with cancer.

21 Aug 2025
Endorsed for
Heart Attack
Chest Pain

Dr Niall Keenan

Dr Niall Keenan

Cardiologist
Is a colleague

FAQ

What are Dr Alexander Lyon's reviews like?

Dr Alexander Lyon's overall patient rating is 4.98 out of 5 stars on Doctify. This is based on 155 reviews.

What languages does Dr Alexander Lyon speak?

Dr Alexander Lyon speaks English

Where is Dr Alexander Lyon located?

Dr Alexander Lyon primarily practices at HCA Healthcare UK The Harley Street Clinic, located at 35 Weymouth Street, London, United Kingdom, W1G 8BJ
See more locations

Does Dr Alexander Lyon accept new patients?

Dr Alexander Lyon generally accepts new patients.

Get in touch with this specialist to enquire as a new patient