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General enquiries:
+44 (0)207 935 4444
Book an appointment:
+44 (0)207 616 7693
Self-pay enquiry:
+44 (0)203 219 3315
The London Clinic

Many of our consultants are offering telephone and video consultations.

Dr Preston's 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.

Specialties and sub-specialties

Gastroenterology
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.
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.

Current posts

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

Medical training

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

Personal interests

Dr Preston enjoys tennis, golf and cycling.

Main numbers

General enquiries: 020 7935 4444 Appointments: 020 7616 7693 Self-Pay: 020 3219 3315

Contact numbers for service departments

Other numbers

Concierge service: 020 3219 3323International office: 020 3219 3266Invoice and payment enquiries: 020 7616 7708Press office 020 7616 7676

Your call may be recorded for training and monitoring purposes.

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