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Executive Committee

Endourology encompasses the treatment of urinary tract stone disease, but it also includes the endourological treatment of other benign diseases of the upper urinary tract using minimally-invasive techniques.

The Section of Endourology was formed in 2002. It developed from the British Society for Endourology, which was a separate organisation independent of BAUS. The Section aims to improve standards and quality of practice within the sub-specialty by promoting training, research and development. In 2009 the Section set up a Patient Advisory Group. The Section usually organises one scientific meeting each year and oversees a series of training courses. The Executive Committee is responsible for the organisation, financial administration and running of the Section.

Members of the Executive Committee


Daron Smith (Chair)

Daron is a member of the stone team at the Institute of Urology in University College Hospital London, and was first elected to the Committee in 2013. He was appointed Hon Sec in 2016 and Vice Chair in 2018 before taking over as Chair in September 2019.   He is the Consulting Editor on stone disease for the BJUI. He has coined the phrase "endoluminal endourology" to describe his practice, which includes the comprehensive management of stone disease, ureteric strictures/trauma, and the diagnosis & endoscopic treatment of upper tract TCC. He is a keen supporter of Formula One motor racing, and has made it a trademark to include a sporting analogy in all his urological talks ... click here for email contact or here for Twitter

Professor Seshadri (Sri) Sriprasad  (Vice-Chair)

Sri is a Consultant Urologist at Darent Valley Hospital, Dartford in Kent and is the Professor of Urology at Canterbury Christ Church University (CCCU); he was elected as the Vice-Chair in September 2019 having been a committee member for five years. He established the Dartford Stone Centre and has a large endourological practice, both "endoluminal and exoluminal". He has a special interest in the management of stones in anomalous kidneys. Sri leads the MCh in Urology programme at the Institute of Medical Sciences, CCCU and is currently BAUS regional representative for the South East Coast. He is a passionate teacher and trainer, has published widely, and is Associate Editor of the Journal of Clinical Urology. He enjoys reading, running and yoga ... click here for email contact or here for Twitter

Robert Calvert (Secretary)

Rob is a Consultant Urological Surgeon at Royal Liverpool & Broadgreen University Hospitals who joined the team in 2016 and was elected as Secretary from 2020.  He has a subspecialist interest in kidney stone treatment and prevention.  He has a large tertiary referral practice of complex stone cases, runs a multidisciplinary metabolic stone clinic and a busy lithotripsy service. He leads the analysis of the BAUS Ureteroscopy Audit and is a member of the NICE Guidelines Committee for kidney stones ... click here for email contact or here for Twitter


Jake Patterson (Member: 2018 to 2022)

Jake is a Consultant Urological Surgeon at Royal Hallamshire Hospital, Sheffield and joined the team in January 2018. He is an endoluminal endourologist and leads a busy multi-disciplinary stone team with a large tertiary practice. He has special interests in complex stone disease in neuropathic patients, in medical device development, in ureteroscopic & percutaneous stone surgery and in the management of other benign / malignant upper urinary tract diseases. He is an active researcher and an experienced, enthusiastic teacher, especially in the teaching of clinical skills. He is getting better at running, which he is learning to enjoy ... click here for email contact or here for Twitter

Hari Ratan (Member: 2018 to 2022)

Hari is a Consultant Urological Surgeon at Nottingham City Hospital and joined the team in January 2018. He trained in the East Midlands and, after three years as a Consultant in Derby, he moved to Nottingham. He has extensive experience in innovative surgical procedures for kidney stone disease, including mini-PCNL and flexible ureterorenoscopy. His other areas of interest are testicular cancer and benign disease of the prostate ... click here for email contact or here for Twitter

Bhaskar Somani (Member: 2019 to 2021)

Bhaskar is a Consultant Urological Surgeon at University Hospital Southampton and joined the team in 2019. His main interests are in stone disease, benign prostate disorders, urinary tract infections, haematuria (blood in urine) and general urology. He has performed more than 1000 ureteroscopy procedures and started the "ultra-mini PCNL" in the south of England with published results ... click here for email contact or here for Twitter

Subu Subramoniam (Member: 2018 to 2022)

Subu is a Consultant Urological Surgeon (and Lead for Stone Surgery) at Queen Elizabeth Hospital Birmingham who joined the team in January 2018. He specialises in complex stone surgery and upper tract laparoscopy. He is passionate about teaching keyhole surgery to trainees, and mentoring colleagues on all aspects of endourology. As a keen teacher and researcher, he has published more than 20 articles, two textbook chapters and a Cochrane review. He enjoys cycling and trekking in his spare time ... click here for email contact or here for Twitter

Benjamin Turney (Member: 2017 to 2021)

Ben is a Senior Clinical Researcher in the Nuffield Department of Surgical Sciences, University of Oxford and Consultant Urological Surgeon at the Churchill Hospital in Oxford. He joined the team in 2017. His clinical interests are stone surgery and stone prevention. His academic interests are in stone disease, and in technology/IT in healthcare. He is currently the Clinical Lead for Urology in Oxford ... click here for email contact or here for Twitter

Zara Gall (Member: 2020 to 2022)

Zara is a Consultant Urological Surgeon at Stepping Hill Hospital, Stockport and joined the Committee in January 2020. She trained in the North West region and, after nearly 4 years in Bolton, moved to Stepping Hill. She leads a busy multidisciplinary stone team and has interests in stone surgery, lithotripsy and stone prevention. She has a particular passion for the development of PCNL (miniaturisation, tubeless, endoscopic combined intrarenal surgery and day case PCNL).  An active clinical researcher, she has been a very successful recruiter to the PURE trial. As an enthusiastic teacher and trainer, she has examined for the FRCS (Urol) since 2018. Zara is a keen skier & hill walker and, together with her family, she is currently aiming to "bag" all 214 Wainwrights ... click here for email contact or here for Twitter


Wasim Mahmalji  (Co-Opted: 2021 to 2022)

Wasim is a Consultant Urological Surgeon at Hereford County Hospital.  He is well-placed to present the realities and frustrations of DGH urology departments, and is passionate about delivering quality endourological care locally. He has been co-opted to bring a more generalist view to the executive's deliberations ... click here for email contact

 Max Johnston (BSoT Representative: from 2021)

Max is an ST6 trainee in the Wessex deanery and represents BSoT on the committee; he joined the team in 2021. He is pursuing a career in Endourology and is currently the Wessex BSoT representative. In his spare time Max enjoys cricket and letting his two children run rings around him.  click here for email contact or here for Twitter

Tim O'Brien (BAUS Trustee)

Tim O'Brien is a Consultant Urological Surgeon at Guy's & St Thomas's Hospital London. He has set up a one-stop diagnostic centre at Guy's, contributed to numerous clinical trials and has been Chair of the Section of Oncology and is currently BAUS President.  Tim was co-opted to the Endourology team as Trustee representative in January 2021.

Click here for email contact or here for Twitter

Kevin Byrnes (BURST Representative: from 2021)

Kevin is a urology specialist registrar in the North Central & East London region and is a representative from the British Urology Researchers in Surgical Training (BURST) Research Collaborative. He is co-lead of the STENT RCT, a collaboration between BURST and the endourology section, investigating the role of stenting affter uncomplicated ureteroscopy. He hopes to increase trainee involvement in the committee's research and auditing projects. ... click here for email contact or here for Twitter