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Dr Allan HarknessCardiology in Colchester
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Dr Allan Harkness

Cardiology in Colchester

MB ChB MSc FRCP FBSE
GMC: 4093574

5.0216reviewsReview

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Expert in:
Chest pain
Palpitations
Coronary CT
Echocardiogram
Pacemaker
Heart failure
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Professional statement

Dr Allan Harkness is a highly acclaimed consultant cardiologist, based in Essex and Suffolk, with a special interest in CT coronary angiography and advanced echocardiography. Dr Harkness works privately at the Oaks Hospital, Colchester and the Nash Basildon Private Unit at The Essex Cardiothoracic Centre.

After graduating from the University of Glasgow in 1994, Dr Harkness went on to complete further specialist training in London and Glasgow, gaining accreditation in both general medicine and cardiology. During his research into heart failure, he worked with the British Heart Foundation on a nurse-led community heart failure service which became the NICE-approved standard of care nationwide.  

Dr Harkness has been a consultant cardiologist at Colchester Hospital since 2006 and at the Essex Cardiothoracic Centre since it opened in 2007. In 2010, he became the clinical lead for cardiology at Colchester Hospital, where he has extensively developed their cardiac services. In 2017, he was appointed as Divisional Director for Medicine and Emergency Care for Colchester Hospital for which he served two three-year terms of office, covering the merger with Ipswich Hospital and the Pandemic. In 2013, he was appointed Deputy Associate Medical Director for Patient Safety for the Trust.

Dr Harkness is a core member of the Education Committee of the British Society of Echocardiography and lectures for national training programs. He also developed the BSE app EchoCalc, a key reference guide for cardiac physiologists worldwide. He has contributed to over a dozen national guidelines on echocardiography. For his contribution to education, research, leadership, volunteering and national reputation, he was awarded Fellow of the British Society of Echocardiography in October 2019. In recognition of his service and contribution to the advancement of echocardiography, he was presented with the 2021 BSE Lifetime Achievement Award.

Clinics

  • Oaks Hospital  profile image

    Oaks Hospital

    Colchester, 120 Mile End Road , CO4 5XR

    Medical insurances accepted

    Bupa
    AXA
    AVIVA
    Cigna
    WPA
    Simply Health
    I'm paying for myself
    Allianz

Credentials

Professional experience

  • 31 years of experience
  • Consultant cardiologist, The Oaks Hospital, Colchester 
  • Divisional Director for Medicine and Emergency Care, East Suffolk and North Essex NHS Foundation Trust (2017-23)
  • Honorary Consultant cardiologist, The Essex Cardiothoracic Centre
  • Consultant cardiologist, Colchester Hospital 
  • Clinical lead for cardiology at Colchester Hospital (2010 – 2017)
  • Specialist Registrar in Cardiology, The Heart Hospital and Royal Free Hospital (2001 – 2006)
View more

Subspecialties

  • Angina
  • Arrhythmia
  • ASD (Atrial septal defect)
  • Atherosclerosis
  • Atrial Fibrillation
  • Blackouts
  • Blood pressure
  • Bradycardia
  • Cardiac rehabilitation
  • Cardiovascular disease
  • Cardioversion
  • Cholesterol
  • Coronary angiography
  • Coronary heart disease
  • Dilated cardiomyopathy
  • Doppler Ultrasound
  • Electrocardiogram
  • Exercise Stress Test
  • Extrasystole
  • Faints
  • Heart attack
  • Heart check up 
  • Heart failure 
  • Heart murmur 
  • Heart problems in cancer patients (Cardio-oncology) 
  • Heart valve disease 
  • Heart valve replacement 
  • Hereditary diseases
  • High triglycerides
  • Hypercholesterolemia
  • Hypertension
  • Hypertrophic Cardiomyopathy
  • Lipid disorders
  • Low blood pressure
  • Metabolic syndrome
  • Missed heart beats
  • Mitral regurgitation
  • Mitral regurgitation
  • Myocarditis
  • Patent foramen ovale
  • Pericarditis
  • Perioperative assessment
  • PoTS syndrome
  • Preventive Cardiology
  • Second medical opinion
  • Shortness of breath (dyspnoea)
  • Syncope
  • Takotsubo cardiomyopathy (broken heart syndrome)
  • Thoracic pain
  • Valvular heart disease
  • Ventricular tachycardia
View more

Professional memberships

  • The Royal College of Physicians and Surgeons of Glasgow (Fellow)
  • The Royal College of Physicians of London (Fellow)
  • The British Society for Heart Failure (Founding member)
  • The British Society of Echocardiography (Fellow)
  • The British Heart Valve Society
  • The British Cardiovascular Society
  • The British Society of Cardiovascular Imaging
  • The European Society of Cardiology
  • The European Association of Cardiovascular Imaging
  • The American Society of Echocardiography
View more

Education

  • MB ChB Glasgow University (1994)
  • Level 2 CT Coronary Angiography, The British Society of Cardiovascular Imaging (2010)
  • Accreditation in transthoracic echocardiography, British Society of Echocardiography (2013)
  • Accreditation in transoesophageal echocardiography, British Society of Echocardiography (2017)
  • MSc in Healthcare Leadership, Birmingham University (2017)
View more

Teaching posts

  • Speaks at national training courses on CT coronary angiography and echocardiography
  • Trains junior doctors in clinical cardiology, pacemaker implantation, coronary angiography, CT coronary angiography and advanced echocardiography
  • Mentors GPs with a Specialist Interest (GPwSPI) in Cardiology
  • Offers GPs courses in the diagnosis and management of angina, atrial fibrillation, heart failure, valve disease, ECG interpretation and cardiac imaging
  • Mentors nurses in cardiac prescribing
View more

Publications and conferences

  • A practical guideline for performing a comprehensive transthoracic echocardiogram in the congenital heart disease patient: consensus recommendations from the British Society of Echocardiography (2022)
  • The assessment of mitral valve disease: a guideline from the British Society of Echocardiography (2021)
  • BSE and BCOS guideline for transthoracic echocardiographic assessment of adult cancer patients receiving anthracyclines and/or trastuzumab (2021)
  • Echocardiographic assessment of aortic stenosis: a practical guideline from the British Society of Echocardiography (2021) 
  • Transthoracic echocardiography of hypertrophic cardiomyopathy in adults: a practical guideline from the British Society of Echocardiography (2021)
  • Echocardiographic assessment of the tricuspid and pulmonary valves: a practical guideline from the British Society of Echocardiography (2020)
  • A practical guideline for performing a comprehensive transthoracic echocardiogram in adults: the British Society of Echocardiography minimum dataset (2020)
  • Echocardiographic assessment of the right heart in adults: a practical guideline from the British Society of Echocardiography (2020)
  • Normal reference intervals for cardiac dimensions and function for use in echocardiographic practice: a guideline from the British Society of Echocardiography (2020)
  • Echocardiographic assessment of the right heart in adults: a practical guideline from the British Society of Echocardiography (2020)
  • Echocardiographic assessment of pulmonary hypertension: a guideline protocol from the British Society of Echocardiography (2018) 
  • A guideline update for the practice of echocardiography in the cardiac screening of sports participants: a joint policy statement from the British Society of Echocardiography and Cardiac Risk in the Young (2018) 
  • Diagnosis and assessment of dilated cardiomyopathy: a guideline protocol from the British Society of Echocardiography (2017) 
  • A safety checklist for transoesophageal echocardiography from the British Society of Echocardiography and the Association of Cardiothoracic Anaesthetists (2015)
  • Direct access echocardiography to a district general hospital: are patients being screened appropriately? (2015)
  • Stress cardiomyopathy (Takotsubo) following radioactive iodine therapy (2015)
  • Impact of methodology and the use of allometric scaling on the echocardiographic assessment of the aortic root and arch: a study by the Research and Audit Sub-Committee of the British Society of Echocardiography (2014)
  • Cardiovascular magnetic resonance in cardiac sarcoidosis with MR conditional pacemaker in situ (2013)
  • Pedunculated left ventricular thrombus presenting with acute ischaemic limb (2008)
  • Morphine for the relief of breathlessness in patients with chronic heart failure--a pilot study (2002)
  • Online appointment booking to rapid access chest pain clinic (2000)
View more

Prizes and awards

  • Level 8 Clinical Excellence Award
  • British Society of Echocardiography 2021 Lifetime Achievement Award

Languages spoken

  • English
Registration number: 4093574

Reviews

All reviews are from real patients and have been verified by our Customer Service department to ensure they meet our guidelines. Rules of the service

216 reviews

5.0

Review this doctor
  • Would you recommend this doctor?
  • Treatment of the doctor
  • Treatment of the staff
  • Waiting time
  • Condition of facilities
  • Really positive experience
    17 March 2026

    H.L.

    Verified patient
  • I felt very reassured with the information provided by Dr Harkness and the way things were explained
    27 January 2026

    D.T.

    Verified patient
  • Dr Harkness was very professional in his examination methods open and friendly. Carried out a detailed examination of my symptoms and medical history. The appointment started early and letter to myself and my GP sent the next day, he encouraged me to make a follow up appointment if required the appointment left me far more confident of my medical condition. I feel I can rely on him to advise and treat me in the future. The appointment was excellent
    13 December 2025

    A.B.

    Verified patient
  • Dr Allan Harkness was immensely knowledgeable, kind & helpful. He went above and beyond, taking time to explain everything clearly and I left with great confidence and comfort in the care given. I couldn't recommend any higher, having much gratitude for his wisdom and expertise.
    1 December 2025

    N.C.

    Verified patient
  • 26 November 2025

    G.W.

    Verified patient
  • Excellent. Thank you.
    12 September 2025

    M.N.

    Verified patient
  • Listened very intently, and made a thorough explanation of the facts and going forward. Filled me with a sence that I was in good hands.
    8 May 2025

    M.T.

    Verified patient
  • Dr Harkness diagnosed my atrial fibrillation and flutter, and administered successful cardioversion at The Oaks. I cannot fault any part of my treatment. His air of quiet confidence is very reassuring; a thoroughly nice man. His team work well with him.
    18 January 2025

    G.F.

    Verified patient
  • I was made to feel relaxed all of the staff were very caring and extremely polite and professional
    18 December 2024

    P.M.

    Verified patient
  • Warm persona, friendly and yet very professional at the same time
    17 December 2024

    D.M.

    Verified patient
View all reviews

Treatments

The doctor is expert in

Chest pain

Coronary CT

Echocardiogram

Heart failure

Pacemaker

Palpitations

The doctor also specialises in:

Ambulatory blood pressure monitoring

Angina

Arrhythmia

Atherosclerosis

Atrial Fibrillation

Atrial septal defect

Blood pressure test

Cardiac rehabilitation

Cardio-oncology

Cardiovascular disease

Frequently Asked Questions

What is Dr Allan Harkness's specialty?

Dr Allan Harkness is a consultant specialising in Cardiology, with extensive experience in assessing and treating patients within this field.

Which conditions and treatments does Dr Allan Harkness specialise in?

Dr Allan Harkness is a cardiologist who provides assessment and treatment for Heart failure, Echocardiogram, Palpitations, Chest pain, Angina, Coronary CT, Pacemaker and Ambulatory blood pressure monitoring. During your consultation, you will be informed of the most suitable options following a personalised evaluation.

How many years of experience does Dr Allan Harkness have?

Dr Allan Harkness has 31 years of professional experience as a consultant cardiologist, providing specialist assessment and treatment in this medical field.

What do patients say about Dr Allan Harkness?

Patients give a rating of 5.0 out of 5 to Dr Allan Harkness, a score considered excellent. This average is based on 216 verified patient reviews, reflecting the experience of those who have attended an appointment.

Are Dr Allan Harkness's reviews verified?

Yes. All Dr Allan Harkness'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 Allan Harkness practise?

Dr Allan Harkness practises in Colchester at 120 Mile End Road , offering in-person care and access to services as a cardiologist.

How can I book an appointment with Dr Allan Harkness?

You can book an appointment with Dr Allan Harkness 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 Allan Harkness see NHS patients?

Many specialists featured on Top Doctors also hold NHS positions. However, appointments arranged for Dr Allan Harkness through this platform are private, either self-pay or covered by private medical insurance.

Does Dr Allan Harkness offer private appointments?

Yes, Dr Allan Harkness offers private appointments for patients seeking flexible and direct access to a consultant cardiologist.

Does Dr Allan Harkness offer online consultations?

Yes, Dr Allan Harkness 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 Allan Harkness accept insurance?

Dr Allan Harkness works with the following private medical insurance providers: Bupa, AXA, AVIVA, Cigna, WPA, Simply Health, Allianz, CS Healthcare, Vitality, The Exeter Friendly, Pru Health, Groupama, April, Freedom, National Assurance, General Medical, Saga, Healix, Legal & General Insurance and Health-online. If your insurer is not listed, you may contact the practice directly to confirm your coverage.

What is Dr Allan Harkness's availability?

Dr Allan Harkness'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 Allan Harkness offer?

You can pay for your consultation with Dr Allan Harkness using the following methods: Self-paying.

What languages does Dr Allan Harkness speak?

Dr Allan Harkness is a cardiologist who offers consultations in English.

How is Dr Allan Harkness selected to appear on this platform?

All doctors listed on Top Doctors, including Dr Allan Harkness, undergo our rigorous selection process. Only one in five specialists meets the required standards to be included.
Discover Top Doctors' rigorous medical selection process.
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.

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Oaks HospitalColchester, 120 Mile End Road , CO4 5XR
Payment methodSelf-paying

Important: Please note the appointment booked is for a consultation with Dr Harkness. Following this consultation, further diagnostic tests or procedures may be arranged as appropriate.

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