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Dr Siwan Thomas-Gibson

Dr Siwan Thomas-Gibson

Dr Siwan Thomas-Gibson is a gastroenterologist and specialist endoscopist, she was appointed to St Mark’s Hospital in 2006 and is the Deputy Director of the Bowel Cancer Screening centre. She is an accredited Bowel Cancer Screener and BCS screening assessor. In 2017 she has taken on the role of Chair of JAG.

Siwan is an honorary Senior Lecturer at Imperial College London, having completed an MD on Training and Assessment in Colonoscopy in St Marks. Her current research and clinical interests are in quality and safety of endoscopy, colonoscopy and polypectomy; improving endoscopic training and assessment; UC surveillance and the management of early colorectal neoplasia.

She was the first chair of the JAG working group overseeing the Quality Assurance of Endoscopic Training throughout the UK until 2012. She sits on the Bowel Cancer Screening Accreditation panel & BSG Endoscopy committee. She developed the BCS mentorship training programme to support screening endoscopists in England and is a member of the BSG SWiG steering group.

Siwan leads and teaches on a large number of endoscopy and colorectal courses. She has participated in numerous live endoscopy courses including TCT and St Mark’s annual Frontiers in Colorectal Diseases course. She has been on the International faculty at the Amsterdam Live endoscopy course and ESGE-Hungary.

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