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Specialties

  • Gastroenterology

Sub specialties

  • Colon cancer screening
  • Gastro-oesophageal reflux/Barrett's oesophagus
  • Irritable bowel syndrome

Professional profile

Dr Preston graduated from St Mary's Hospital Medical School, Paddington in 1995.
His PhD, undertaken at Cancer Research UK, London, outlined the role of stem cells in gastrointestinal cancers.
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The majority of his postgraduate training was centred at Barts and the London NHS Trust, in addition to a year spent in Sydney as an Advanced Endoscopy Fellow, prior to his appointment as a consultant at Barts and the London NHS Trust.
His clinical practice focuses on the diagnosis and treatment of gastro-oesophageal reflux disease, Barrett's oesophagus, inflammatory bowel disease (Crohn's disease and ulcerative colitis) and irritable bowel syndrome.
His endoscopic expertise relates to gastroscopy, colonoscopy and endoscopic ultrasound and he is an accredited colonoscopist for the National Bowel Cancer Screening Programme.
He has written numerous papers and book chapters on gastrointestinal cancer and continues his research in Barrett's oesophagus.
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Personal profile

Dr Preston enjoys tennis, golf and cycling.

Current posts

  • Consultant Gastroenterologist/Director of Endoscopy
    Barts and the London NHS Trust
  • Honorary Lecturer
    Queen Mary, University of London
  • Nationally accredited endoscopy trainer

Medical training

Year qualified
1995
  • St Mary's Hospital Medical School
    1995

Ages treated

Adults

Clinic location

116 Harley Street
London W1G 7JL
View map and location details

Clinic times

Tuesday: Evening
Friday: Afternoon

Secretary

Victoria Hollings
020 7616 7645/2

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Why choose The London Clinic?

What makes The London Clinic special and why should you choose to have your private treatment with us?

The guiding principle of The London Clinic has always been to deliver exceptional patient care.  This was the focus in 1932 when the Clinic opened and it has remained the ethos we have followed for the past 80 years.

Find out more about our leading consultants, dedicated staff and ground-breaking treatments.

Book an appointment

Making an appointment at The London Clinic couldn’t be easier, whether you use your private medical insurance, pay for your own treatment or are funded through a third party. 

As London's leading independent private hospital, we offer appointments with some of the best consultants in the country and indeed worldwide.

To book an appointment click here and complete the online form or call us on 020 7616 7693

Map and directions

Our interactive map and directions facility provides all the information you need about getting to The London Clinic. 

Find out where each of our buildings are located, plan your journey and even find local parking.

Simply click here for maps, directions and useful contact numbers.