Professor Ashley Dennison



GMC number: 2385435

Practicing since: 1977


General Surgery

Consultation times

  • Weekly Friday evening
  • Overview
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Professor Ashley Dennison is a General Hepatopancreaticobiliary and Laparoscopic Surgeon at the Nuffield Health Leicester Hospital. Professor Dennison is a Professor of Hepatobiliary and Pancreatic Surgery at the University of Leicester. Professor Dennison was appointed as a consultant general surgeon in Leicester in 1994 with a special interest in surgery of the liver, biliary tract and pancreas. Professor Ashley Dennison trained in liver and pancreas surgery with Professor Leslie Blumgart in Berne, Switzerland, Professor Henri Bismuth in Paris and Professor Rudolf Pichylmayr in Hannover. 

Professor Ashley Dennison has unrivalled experience in complex, major surgery for malignancies of the liver and pancreas, has one of the largest experiences in the UK of ERCP (endoscopic removal of gallstones) and surgical treatment of acute and chronic pancreatitis. Since 1994 he has run a programme of total pancreatectomy and islet autotransplantation for the treatment of intractable pain from chronic pancreatitis which is the largest series outside the USA.

Please contact Professor Dennison's Medical Secretary, Amanda Rangassamy on 0116 258 8327.

Special interests

  • Laparoscopic gall stone surgery
  • Laparoscopic and open surgery for complicated gall stone disease
  • Laparoscopic freeing of adhesions
  • Hernia surgery including the open repair of groin and incisional hernias
  • Chronic pancreatitis
  • Chronic abdominal pain
  • Major surgery of the liver, biliary tract and pancreas
  • Treatment of liver and pancreas cancer
  • Endoscopic treatment of gallstones (ERCP)

Other interests

Professor Dennison is a past President of the Pancreatic Society of Great Britain and Ireland, past President of the Great Britain, and Ireland Hepatopancreaticobiliary Association, previous National HPB lead on the Association of Upper Gastrointestinal Surgery. Presently he isChair of the East Midlands Clinical Senate, Chair of the Midlands Clinical Advisory Group and have recently been awarded a Visiting Personal Chair at PUMC Hospital in Beijing.

Treatments and tests offered by Professor Ashley Dennison at Nuffield Health

  • Hernia repair
  • Cholecystectomy (Gallbladder removal)

Locations Professor Ashley Dennison works with

Related experience


Professor Ashley Dennison has a significant academic profile and have been involved in basic and clinical research for over 35 years and has given academic lectures in over 40 countries many of which were keynote, plenary or invited lectures and continues to be regularly invited to speak and contribute as a faculty member at major international meetings.

Professor Dennison has published over 400 peer reviewed publications and the importance of the research areas to which he contributes is demonstrated by the fact that he has been cited more than 14,500 times by other scientists and surgeons and the academic metrics that are used to determine the importance of published research [citations 14544, h-index 61 and i10-index 244; Google Scholar October 2021].


  • The Medical Defence Union
  • Royal College of Surgeons
  • Association of Upper Gastrointestinal Surgery (AUGIS)
  • Pancreatic Society of Great Britain and Ireland (PSGBI)
  • Great Britain and Ireland Hepatopancreaticobiliary Association (GBIHPBA)

Other posts held

  • Hepatopancreaticobiliary and Laparoscopic Surgeon 


Professor Ashley Dennison does not hold a share or financial interest in this hospital, another Nuffield Health hospital or the company.

Professor Ashley Dennison does not have a share or financial interest in equipment used at this hospital or another Nuffield Health hospital.

Professor Ashley Dennison does not hold any paid advisory role(s) at this hospital or on behalf of Nuffield Health.