Dr Mark Williams is a leading consultant cardiologist based in Chertsey, London and Guildford who specialises in interventional cardiology, coronary heart disease, angina alongside chest pain, shortness of breath and hypertension (high blood pressure).
He privately practises at The Runnymede Hospital, Spire St Anthony's Hospital and offers remote clinics and investigations from 77 Wimpole Street and Nuffield Health Guildford Hospital. His NHS base is St Peter's Hospital NHS Foundation Trust, where he was clinical director in cardiology between June 2018 and November 2019. He is bilingual and speaks Jamaican Patois.
Dr Williams is highly qualified. He has an MBBS, an MD (Res) after pursuing a clinical research fellowship in systemic scelorosis-associated pulmonary arterial hypertension at the Royal Free Hospital, and a BSc - all from the University of London. He was also awarded an MRCP (UK) and FRCP (UK) from the Royal College of Physicians (London).
He completed his specialist training in interventional cardiology at the Royal Sussex County Hospital, Brighton, and King's College Hospital, London.
Dr Williams is a respected name in teaching, with experience of teaching both undergraduate and postgraduate students. He is currently an honorary senior lecturer at St George's Medical School, University of London. He has received three teaching excellence awards as nominated by his students in his time there.
Dr Williams has received further accolades, including a Clinical Excellence Award, the Association of Commonwealth Universities Prize and the Sir Edward Boyle Memorial Trust Award. He was also awarded the Sir John Cass Foundation Award.
He is is a member of various professional organisations including the Royal College of Physicians (RCP), the General Medical Council (GMC) and the Medical Protection Society (MPS). He is also a member of the British Cardiovascular Intervention Society (BCIS).
Clinics
The Runnymede Hospital - part of Circle Health Group
Honorary senior lecturer, St George's Hospital Medical School, University of London (Present)
Undergraduate and postgraduate teacher, Ashford & St Peter's Hospital
Publications and conferences
1994, BSc Thesis: ‘Sequence analysis and location of the idiotopes of BEG-2: A Fetal Human DNA-Binding Autoantibody. Supervisors: Prof N Staines
MD Thesis: ‘Insights into the management of pulmonary arterial hypertension in the setting of systemic sclerosis’ Supervisors: Dr JG Coglan, Prof C Denton
2010, King’s College Hospital: ‘Comparison of central versus peripheral adenosine infusions in the calculation of coronary pressure measurement in patients with stable angina. Supervisor: Dr J Byrne, Dr N Melikian.
Impact of Bosentan and endothelin-1 antagonist on the management of connective tissue disease associated pulmonary arterial hypertension. (Published and presented at the 1st International Meeting on Pulmonary Hypertension – Cambridge 2003).
Kawald A, Williams M, Elliott C et al. Pulmonary arterial hypertension in fibrotic and non-fibrotic SSc Patients – response to therapy. Rheumatol. 2004;43(S2):ii96.
Williams MH, Das C, Handler CE, et al. Modern treatment algorithms improve survival in systemic sclerosis associated pulmonary hypertension. Rheumatol. 2005;44(S2):i132.
Akram MR, Handler CE, Williams MH et al. Frequency of coronary artery disease in systemic sclerosis: Application of current probability risk assessment. Rheumatol. 2005;44(S2):i131.
Williams MH, Handler CE, Akram MR et al. Prognostic value of brain natriuretic peptide in patients with pulmonary arterial hypertension. Heart 2005;91(S1):A58.
Williams MH, Das C, Handler CE, et al. Improved survival of systemic sclerosis-associated pulmonary arterial hypertension in the endothelin antagonist era. Heart 2005;91(S1):A64.
Williams MH, Das C, Handler CE, et al. Systemic sclerosis associated pulmonary hypertension: improved survival in the current era. Heart 2006 92: 926-932.
Williams MH, Handler CE, Akram R, et al. Role on N-terminal brain natriuretic peptide (N-TproBNP) in scleroderma-associated pulmonary arterial hypertension. Eur Heart J 2006: 27; 1485-1494.
Shah NR, Meira L, Elliott RM, Howlett PJ, Brown AJ, Williams MH, West NE, Hoole S, Mahmoudi M. TCT-313 DNA repair activity determines atherosclerotic plaque stability in .patients with stable coronary artery disease. J Am Coll Cardiol 2015;66 Supl :B124 - DOI: 10.1016/j.jacc.2015.08.329.
Excellent consultation, follow up ECG carried out and 24 hr heart monitor arranged.Would definitely recommend his services to a friend
12 April 2026
P.M.
Verified patient
Doctor's response -
Thank you for your review.
It is much appreciated.
Dr Williams was very reassuring during our consultation. he spent time to listen to my concerns and to fully explain the upcoming treatment. I have no hesitation in recommending him to any potential patient.
27 March 2026
L.F.
Verified patient
Dr Williams has helped my wife and is now helping me, he is always very helpful and professional.
21 March 2026
A.P.
Verified patient
Dr Mark Williams provided excellent support and advice throughout the whole process.
19 March 2026
M.M.
Verified patient
my experience with Dr Mark was very positive. I was at a very critical state and he provided a service that gave me hope and confidence. I highly recommend the service. I felt listened to and understood. The suggestions he made was spot on and i can already see improvement in my condition.
13 March 2026
T.A.
Verified patient
12 March 2026
C.M.
Verified patient
24 February 2026
E.W.
Verified patient
Meeting Dr Williams at Runnymede hospital was a delight, the hospital was lovely clean and had the most friendly staff. Dr Williams himself was on time, efficient and took his time to explain any questions I had in detail
9 February 2026
N.H.
Verified patient
Doctor's response -
Thank you for your kind review. This is most appreciated.
Dr Mark Williams is a consultant specialising in Cardiology, with extensive experience in assessing and treating patients within this field.
Which conditions and treatments does Dr Mark Williams specialise in?
Dr Mark Williams is a cardiologist who provides assessment and treatment for Chest pain, Hypertension (high blood pressure), Angina, Coronary heart disease, Shortness of breath and Interventional cardiology. During your consultation, you will be informed of the most suitable options following a personalised evaluation.
How many years of experience does Dr Mark Williams have?
Dr Mark Williams has 29 years of professional experience as a consultant cardiologist, providing specialist assessment and treatment in this medical field.
What do patients say about Dr Mark Williams?
Patients give a rating of 5.0 out of 5 to Dr Mark Williams, a score considered excellent. This average is based on 38 verified patient reviews, reflecting the experience of those who have attended an appointment.
Are Dr Mark Williams's reviews verified?
Yes. All Dr Mark Williams's reviews come from verified patients who have attended either an in-person or an e-Consultation appointment. We use a system that ensures authenticity and prevents fake reviews. Some profiles may also display reviews from other platforms, which follow their own verification policies, with the source always clearly indicated.
Where does Dr Mark Williams practise?
Dr Mark Williams practices in the following locations:
Chertsey at Guildford Street
South London at 801 London Road
W1G Marylebone London at 77 Wimpole Street
Weybridge at No 10 & 11, Horizon Business Village, 1 Brooklands Rd
Central London at 164-178 Cromwell Rd, London
In-person consultations are available at these locations as a Cardiology.
How can I book an appointment with Dr Mark Williams?
You can book an appointment with Dr Mark Williams directly from this page by selecting the time that suits you best. Alternatively, you can call the phone number shown if you prefer personalised assistance.
Does Dr Mark Williams see NHS patients?
Many specialists featured on Top Doctors also hold NHS positions. However, appointments arranged for Dr Mark Williams through this platform are private, either self-pay or covered by private medical insurance.
Does Dr Mark Williams offer private appointments?
Yes, Dr Mark Williams offers private appointments for patients seeking flexible and direct access to a consultant cardiologist.
Does Dr Mark Williams offer online consultations?
Yes, Dr Mark Williams offers online consultations. You can book an appointment directly from this page by selecting the date and time that suit you best. Personalised assistance is also available by calling the number displayed on this page.
Does Dr Mark Williams accept insurance?
Dr Mark Williams works with the following private medical insurance providers: Bupa, AXA, AVIVA, Cigna, WPA and Vitality. If your insurer is not listed, you may contact the practice directly to confirm your coverage.
What is Dr Mark Williams's availability?
Dr Mark Williams's availability depends on the appointment slots open at any given time. On this page, you can check current availability, and if no slots are shown, you can request an appointment or contact the practice directly.
What payment methods does Dr Mark Williams offer?
You can pay for your consultation with Dr Mark Williams using the following methods: Self-paying or Prepaid.
What languages does Dr Mark Williams speak?
Dr Mark Williams is a cardiologist who offers consultations in English.
How is Dr Mark Williams selected to appear on this platform?
All doctors listed on Top Doctors, including Dr Mark Williams, undergo our rigorous selection process. Only one in five specialists meets the required standards to be included.
The doctor, or where applicable the hospital or medical centre in which the doctor provides services, undertakes to keep the information relating to the prices of services published on their profile on the Top Doctors platform up to date at all times, ensuring that such prices correspond to those effectively charged to patients. In the event of any discrepancy between the published price and the price ultimately charged to the patient, the doctor and/or the relevant hospital or medical centre shall be solely liable towards the patient and towards Top Doctors for any claim or financial difference arising therefrom.