Professional background

Dr Gavin Johnson is a consultant gastroenterologist at UCLH and The Royal Free Hospitals, and a senior lecturer in medical education at UCL. His main clinical practice is in ERCP, EUS and pancreaticobiliary disease, and his main research interest is in Medical Education and assessment. He has a Masters and Medical Doctorate in Medical Education from work in assessment of postgraduate training with the Royal College of Physicians of London.

He is Director of Undergraduate Education at UCLH. Dr Johnson is on the Quality Assurance in Training group of JAG, and leading on UK ERCP and EUS accreditation, and is leading a working group for the European Society of GI Endoscopy (ESGE) on standards in training for ERCP and interventional EUS for Europe. Dr Johnson has set up numerous postgraduate courses at UCLH, and is on the executive organising committee of the annual London Live Endoscopy, and BSG Endolive in 2015, 2017 and 2019. He is the former chair of BSG Education Committee, and was the inaugural web-editor of UEG eLearning for 4 years from until 2016. Dr Johnson currently serves on the Education Committee of ESGE.

Research interests

In-training assessment, eLearning, interventional endoscopy


  • ERCP assessment tool: evidence of validity and competency development during training. Siau K, Dunckley P, Feeney M, Johnson GJ. Endoscopy 2019 51(11):1017-1026
  • Practical guide to Acute Pancreatitis. Goodchild G, Johnson GJ. Frontline Gastroenterology 2019: 10(3): 292-299
  • Change in scoring of Direct Observation of Procedural Skills (DOPS). Siau K, Dunckley P, Valori R, Feeney M, Hawkes ND, Anderson JT, Beales ILP, Wells C, Thomas-Gibson S, Johnson GJ. Endoscopy 2018 50(8):770-77
  • The Role of the MDT in Managing Benign HPB disease. Bekkali N, Johnson GJ. Frontline Gastroenterology 2017 Jul;8(3):210-213
  • Pancreatoscopy-Directed Electrohydraulic lithotripsy for pancreatic ductal stones in painful chronic pancreatitis using spyglass. Bekkali N, Murray S, Johnson GJ…Webster GJ Pancreas 2017 Apr; 46(4): 528-530
  • Training in ERCP and EUS in the UK anno 2017. Bekkali N and Johnson GJ. Frontline Gastroenterology 2017 Apr;8(2):124-128
  • Diagnosis of pancreaticobiliary malignancy by detection of minichromosome maintenance protein 5 in biliary brush cytology. Keane MG, Huggett MT, Chapman MH, Johnson GJ…Pereira SP Br J Cancer 2017 Jan; 116(3):349-355
  • Laparoscopic assisted ERCP (LA-ERCP) following bariatric gastric bypass surgery initial experience of a single UK centre. Paranandi B, Joshi D…Johnson GJ…Webster GJ Frontline Gastroenterology 2016 Jan; 7(1):54-9
  • Endoscopic versus percutaneous drainage of symptomatic pancreatic fluid collections: a 14-year experience ina tertiary hepatobiliary centre. Keane M, Sze SF, Johnson GJ..Pereira SP. Surg Endosc 2016 Sep; 30(9):3730-40
  • Endoscopic versus percutaneous drainage of symptomatic pancreatic fluid collections: a 14-year experience from a tertiary hepatobiliary centre. Keane MG, Sze SF, Cieplik N, Murray S, Johnson GJ, Webster GJ, Thorburn D, Pereira SP. Surg Endosc. 2015 Dec 16. [Epub ahead of print]
  • Paranandi B, Joshi D, Johnson GJ, Webster GJ (2015). Pericardiobiliary Fistulation: A Rare Complication of Therapeutic ERCP in a Patient With IgG4-Related Sclerosing Cholangitis. ACG Case Rep J. 2015 Jul 9;2(4):242-4
    • Hart A, Johnson G, Huggett M (2015) Do we need a subspecialty curriculum for training in pancreaticobiliary medicine in the UK? Frontline Gastroenterol. 2015 Jul;6(3):175-177
  • Joshi D, Jager R, Hurel S, Pereira SP, Johnson GJ, Chapman M, Fowler R, Winstanley A, Losseff N, Webster GJ (2015). Cerebral involvement in IgG4-related disease. Clin Med. 2015 Apr;15(2):130-4
  • Johnson GJ (2013) UEG Education: What's that all about? United European Gastroenterol J. 2013 Jun;1(3):214-5
  • Keane MG, Johnson GJ (2012). Early diagnosis improves survival in colorectal cancer. Practitioner. 2012 Jul-Aug;256(1753):15-8, 2
  • Chapman MH, Webster GJ, Bannoo S, Johnson GJ, Wittmann J, Pereira SP (2012) Cholangiocarcinoma and dominant strictures in patients with primary sclerosing cholangitis: a 25-year single-centre experience. Eur J Gastroenterol Hepatol. 2012 Sep;24(9):1051-8
  • Crossley J, Johnson GJ, Booth J, Wade W (2011) Ask a stupid question, and you’ll get a stupid answer: Construct alignment improves the performance of workplace based assessment. Medical Education Med Educ. 2011 Jun;45(6):560-9
  • Johnson GJ, Booth J, Crossley J, Wade W (2011) Assessing trainees in the workplace: results of a pilot study. Clinical Medicine Vol 11(1);1-6
  • Johnson GJ, Hatfield ARW, Rodriguez-Justo M, Groves C, Webster G. A diagnosis of an intraluminal carcinoid tumour of the bile duct using cholangioscopy. GI Endoscopy 2010; 71:622-23
  • Johnson GJ, M Banks. Endoscopic submucosal dissection of a carcinoma-in-situ of the gastric antrum. The DAVE Project (Digital Atlas of Video Education)
  • Johnson GJ, M Banks. Gastropleural fistula complicating oesophagectomy: endoscopic closure using absorbable vicryl mesh and fibrin glue. The DAVE Project (Digital Atlas of Video Education)
  • Sugumar A, Levy MJ, Kamisawa T, Kim M, Enders F, Amin Z, Baron TH, Chapman MH, Church NI, Clain JE, Egawa N, Johnson GJ, Okazaki K, Pearson RK, Pereira SP, Petersen BT, Read S, Sah RP, Sandanayake NS, Takahashi N, Topazian NP, Uchida K, Vege SS, Webster GJ, Chari ST. Utility of Endoscopic Retrograde Pancreatogram (ERP) to Diagnose Autoimmune Pancreatitis (AIP): An International, Double Blind, Randomized, Multicenter Study. GI Endoscopy April 2009 Vol. 69, Issue 5, Page AB124
  • Sandanayake NS, Church NI, Chapman MH, Johnson GJ, Dhar DK, Amin Z, Deheragoda MG, Novelli M, Winstanley A, Rodriguez-Justo M, Hatfield AR, Pereira SP, Webster GJ. Presentation and Management of Post-treatment Relapse in Autoimmune Pancreatitis/Immunoglobulin G4-Associated Cholangitis. Clin Gastroenterol Hepatol. 2009 Apr 1 (Epub ahead of print)#
  • Johnson GJ, Barrett J, Jones M, Wade W. The Acute Care Assessment Tool: a workplace based assessment of the performance of a physician in training on the Acute Medical Take. The Clinical Teacher 2009 6(2);105-9
  • Langlands A, Johnson GJ et al. RCPE UK Consensus Statement on Acute Medicine. British Journal of Hospital Medicine, Supplement 1 Jan 2009, Vol 70, No. 1
  • Johnson GJ, Barrett J, Jones M, Parry D, Wade W. Feedback from Educational Supervisors and Trainees on the Implementation of Curricula and the Assessment System for Core Medical Training. Clinical Medicine 2008 Oct;8(5)484-9
  • Johnson GJ, Edge V, Palmer J, Burke DA. Audit of Surveillance Colonoscopy: Case Study. Case report on Global Rating Scale Knowledge Management System Website (
  • Johnson GJ, Edge V, Palmer J, Burke DA. Audit of colonoscopy surveillance waiting list in a District General Hospital: the benefit of BSG guidelines. Gut 2006; 55 (Suppl II) A8
  • Johnson GJ, Cosnes J, Mansfield J. Smoking Cessation as Primary Therapy to Modify the Course of Crohn's Disease: A review. Alimentary Pharmacology and Therapeutics 2005; 21:921-931
  • Johnson GJ, Thompson NP. Inflammatory Bowel Disease and Smoking: A Survey of Patients Knowledge and Views. Proceedings of the Association of North of England Physicians. July 2004.