Arun Sahai


Consultant urological surgeon


Mr Arun Sahai, PhD, FRCS (Urol), BSc (Hons), is a consultant urological surgeon in functional urology (bladder dysfunction, incontinence, uro-neurology and urinary tract reconstruction) at Guy's and St Thomas' NHS Foundation Trust and a honorary senior lecturer within King's College London. Arun has been a consultant at Guy's and St Thomas' NHS Foundation Trust since 2013.

Arun qualified from the United Medical and Dental Schools of Guy's and St Thomas' and was trained in urology on the south Thames rotation through the London Deanery. He spent his senior training years in the department of urology at Guy's Hospital and following this undertook a visiting fellowship with Professor De Ridder at UZ Leuven Hospital in Belgium.

Arun is a member of the British Association of Urological Surgeons (BAUS), European Association of Urology, International Continence Society, International Consultation on Incontinence Research Society and Royal College of Surgeons of England.

His research interests include various aspects of benign bladder dysfunction. He is active in both commercial and non-commercial clinical trials. He has published over 90 peer reviewed international papers and over 15 book chapters. 

Arun is the lead for undergraduate education in urology for his local medical school, King’s College London. He is also involved in several aspects of postgraduate education including exam setting for the FRCS (Urol), invited faculty to numerous conferences (lectures and chair), tutor/faculty on many female and functional urology courses.

He is currently on the committee of female, neurological and urodynamic urology within BAUS. He is a frequent reviewer for many international urology journals and is currently on the editorial board of neurourology and urodynamics.

Education and training

  • First Class Honours BSc degree in anatomy and cell biology (1996)
  • MRCS (2003)
  • FRCS (Urol) (2010)
  • PhD thesis based on the use of botulinum toxin in overactive bladder (2011)

Research interests

  • Overactive bladder syndrome
  • Bladder pain syndrome/interstitial cystitis

  • Urinary tract reconstruction


  • Tutor and supervisor for surgical BSc
  • Organiser of urology teaching for medical students
  • Lecturer on medical school curriculum
  • Examiner for final year examinations for medical students (GKT), MRCS and FRCS Revision courses
  • Co-author on revision books for final year medical students and MRCS exam
  • GKT medical student mentorship programme


  • Hadley Trust – The Urology Foundation
  • Royal Society of Medicine Urology Section
  • Research Grants: Boston Scientific, Allergan
  • Jenny Ackroyd Prize – Cheselden Club, St Thomas' Hospital

Last updated: April 2022

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