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World-renowned cardiology consulting and state-of-the-art cardiac diagnostics in the heart of London

One Heart Clinic provides comprehensive cardiac care in the heart of Harley Street, London, and offers the full range of non-invasive cardiology investigations, using state-of-the-art equipment.

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World-leading cardiologists

One Heart Clinic is led by three world-leading cardiologists who each specialise in their specific interest areas, and together provide comprehensive cardiac care.

State-of-the-art facilities

In addition to our quality care and expertise, One Heart is committed to offering our patients the latest cutting edge treatments and technologies from our London-based clinic.

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Central London location

One Heart Clinic is based on the South end of the world famous Harley Street in the heart of central London and easily accessible from Oxford Circus Underground Station.

Fast-track your appointment

We believe the best cardiac care can only be achieved by the best cardiologists in their fields, working together, for you and your heart. Our consultants are able to offer appointments throughout the week and at weekends.

"Dr Fakhar Khan, you and all your staff imbued me with confidence and I am deeply grateful for the remarkable service I received. My grateful thanks for your professionalism and, incidentally, quiet humour - so much appreciated."

September 12th 2017

"Doctor Sen and all the personnel he works with, at the various locations where I was tested or treated, were excellent, professional and friendly. I never have thought I would say this... but I actually enjoyed the experience."

February 6th 2018

"Dr Fakhar Khan, I would like to thank you for my successful surgery. You have been very patient and outstanding."

August 9th 2017

"Dr Assomull was very nice and compassionate. Would recommend."

May 2nd 2019

"Dr Fakhar Khan, thank you for the excellent treatment I received fro you and your staff. I am very grateful for the considerate and expert treatment and advice."

August 7th 2017

"I cannot stress how great Dr Sen was and still is as my cardiac consultant. Though everyone on the NHS team has been brilliant, Dr Sen was the problem solver when things went wrong and was the grease in the wheels when things slowed down. I'm very grateful to have Dr Sen looking out for me, it's like having my own private doctor, he's quite remarkable!"

February 7th 2018

"Dr Fakhar Khan is Very knowledgable and friendly. He will discuss your issue deeply and throughly."

September 9th 2018

"I have felt very grateful to be under Dr Sen's care as he is clearly very thorough and conscientious in his approach to his work. My symptoms were somewhat unique so he left no stone unturned in his efforts to reach an accurate diagnosis."

February 6th 2018

"Dr Ravi Assomull is great doctor very experienced and friendly, it’s a pleasure to meet him and get seen by him, I look forward to see him again.."

May 28th 2019

"You and all your staff imbued me with confidence and I am deeply grateful for the remarkable service I received. My grateful thanks for your professionalism and, incidentally, quiet humour - so much appreciated."

September 12th 2017

"Dr Assomull explained everything to us very clearly and went through the proposals for treatment. There was no feeling of being rushed and questions were answered in a clear easily understandable way."

May 15th 2019

"Thank you for all your help and care. I am very grateful for your kindness and help in my road to recovery."

September 18th 2017

"One of the best if not the best cardiologist in the city. Due to many health issues I have seen a ton of doctors over the years and he is the all-time best. Dr. Assomull and his staff are very responsive, should you have a problem or questions. You can't find a cardiologist this good. You need to know him and stay with him as long as you can."

July 22nd 2014

"Dr Assomull was very personable and approachable as a consultant. My appointment went really well."

July 4th 2017

"Dr Fakhar Khan, thank you for all your help and care. I am very grateful for your kindness and help in my road to recovery."

September 18th 2017

News & comment

Our consultants, associates and clinic team provide analysis and insight into the latest developments in cardiac care.