Dr Alexander Sirker

Dr Alexander Sirker

MA (Cantab), MB BChir, MRCP, PhD


22 years of experience
8 years as a specialist

Languages spoken

  • English
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Registered with

  • General Medical Council: 4372547
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    Practices worked at

    The Harley Street Clinic

    35 Weymouth Street, london, United Kingdom, W1G
    159 reviews

    The Wellington Hospital

    St Johns Wood, London, United Kingdom, NW8 7JA
    198 reviews

    The Princess Grace Hospital

    42-52 Nottingham Place, London, United Kingdom, W1U 5NY
    234 reviews


    Dr Alexander Sirker works as a Consultant in Interventional and General Cardiology at UCLH and St Bartholomew’s Hospital, London. 

    He has specific expertise in coronary angiography, angioplasty and stenting procedures, performing these procedures for UCLH patients at St. Bartholomew’s Hospital. Other invasive and interventional procedures undertaken by Dr Sirker include pressure wire studies, intravascular ultrasound (IVUS), optical coherence tomography (OCT), rotational atherectomy and implantation of bioresorbable vascular scaffolds. His particular interests in Interventional Cardiology include i) use of the radial artery (at the wrist) for ‘keyhole’ access in diagnostic and therapeutic procedures and ii) complex coronary interventions, including treatment of bifurcation disease, calcified lesions and diseased bypass grafts. 

    He also has a strong interest in clinical risk reduction and is now the site lead at St. Bartholomew’s Hospital for implementation of the new National Safety Standards for Invasive Procedures across all medical specialities.

    With his broad background in General Adult Cardiology, Dr Sirker undertakes outpatient clinics at the main University College Hospital site, treating patients with conditions such as coronary artery disease, heart valve disease, high blood pressure and heart failure. 

    He also deals with pre-operative cardiac assessment prior to non-cardiac surgery and with cardiovascular risk assessment more generally.

    Dr Sirker trained in medicine at the University of Cambridge, graduating with First Class Honours in Physiology in 1994. He was awarded several prizes, an exhibition and three scholarships, then continued training at Cambridge University Clinical School, qualifying as a doctor in 1996 with a triple Distinction in the Final MB examinations.

    His specialist training in Cardiology was undertaken at a number of leading cardiac centres, including the Royal Brompton, Harefield, and Guy’s and St Thomas’ Hospitals. His specific expertise in Interventional Cardiology was gained at King’s College Hospital, London and during an international fellowship year at the Royal Jubilee Hospital, British Columbia, Canada – a pioneering centre in the use of radial access for angioplasty and stenting.

    He has formal national accreditation in echocardiography and has trained in cardiac CT. He is also an accredited specialist in General (Internal) Medicine.

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    Medical procedures

    • Transoesophageal Echocardiography
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    Special interests

    • Congestive Heart Failure
    • Heart Attack
    • Heart Valve Problems
    • High Blood Pressure
    • Loss of consciousness (Syncope)
    • Unstable Angina
    • Angina
    • Chest Pain
    • Dizziness
    • Heart Muscle Disease
    • Pulmonary Hypertension
    • Valvular Heart Disease
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    BChir 1996 University of Cambridge

    MB 1997 University of Cambridge

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