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James Mackay: Consultant Oncologist in London

Dr James Mackay is a highly regarded consultant clinical genetic oncologist who practices at The London Breast Clinic at 108 Harley Street. He is experienced and has a keen clinical interest in cancer genetics, inherited cancer, cancer screening and the introduction of complex genetic tests into clinical cancer care.

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Dr Mackay qualified as a doctor in 1983 from the University of Edinburgh, and went on to complete further training in Cambridge at Trinity College, gaining his qualification in medical oncology in 1996. He is also fellow of the Royal College of Physicians.

He is highly regarded in the field of oncology and his exceptional level of knowledge has allowed him to become a leading doctor in his field. Due to his expert knowledge, he regularly lectures at some of the UK’s largest teaching hospitals.

Dr James Mackay is renowned for setting up the first regular world based remote cancer genetics test for East Anglia and North-East Thames using a real time tele-conferencing technology service at Great Ormond Street Hospital.

He also initiated the Genetic Breast Cancer Trial, which uses chemotherapy on women with breast cancer who carry a faulty gene. This test us the first randomised trial of chemotherapy based on inherited genetics in the world.

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Dr James Mackay has expertise in cancer genetics and consults at a number of renowned London Hospitals including 108 Harley Street. He is supported by most major insurers, including: Bupa, AXA PPP, Vitality Health, Aviva and Simply Health.

Dr Mackay's clinical interests include:

  • Cancer genetics
  • Inherited cancer
  • Cancer screening
  • Cancer care
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The London Breast Clinic at 108 Harley Street

Dr Mackay practices at The London Breast Clinic, a centre that is home to a team of multidisciplinary experts and state of the art clinical equipment. The centre is open every weekday, so appointments can usually be arranged within 24 hours, and in some cases even the same day. They provide a full range of services for a comprehensive list of breast diseases.


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Accreditation and admitting rights

James Mackay is an accredited consultant for the following hospitals, clinics and groups...

Professional details



Qualified in 1996 in United Kingdom

Registrations and licensing

  • General Medical Council (GMC)

    Registration no.: 2846244

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