Our Research Fellows

We are committed to research, training and education in all aspects of intestinal and colorectal disorders. We have an active research programme with over 15 research fellows based at St Mark's.

We aim to create and sustain an environment in which our research fellows are supported throughout their training. Research forums take place monthly, in which fellows can prepare for upcoming presentations and receive valuable feedback from their peers and supervisors. A variety of workshops are also organised for fellows to take part in to support their research.

The activities of the Academic Institute and its research fellows are coordinated by the Research Coordinator.

Our current Research Fellows include:


  • Ahmir Ahmad


    In 2018-19 he completed an Endoscopy Fellowship at St Mark’s Hospital.  He has since continued as an Endoscopy Research Fellow undertaking a range of projects relating to Efficiency in Colonoscopy.

  • Alessandra Orlando

    MBBS – MD

    Alessandra is the Pelvic Floor and Anorectal Physiology clinical research fellow, undertaking her MD in the Physiology Unit at St Mark’s Hospital, London.

  • Anisha Sukha

    MBChB BSc(Hons) MRCS

    Anisha has been awarded a Royal College of Surgeons of England Research Fellowship and is undertaking a PhD research project titled ‘Polyp PROGRESSors’ under the supervision of Dr Adam Humphries and Professor Trevor Graham. She is investigating the evolution of sporadic polyps using next-generation sequencing.

  • Anu Obaro

    BSc (Hons) MB BS, FRCR

    Anu is undertaking a PhD project entitled PERFECTS – PERFormance & Evaluation in CT colonography Screening. She is developing and will assess the impact of individualised training, assessment and feedback on the interpretation of CT Colonography by Consultant Radiologists in England.

  • Basil Morson Research Fellow Roshani Patel

    BSc (Hons) MBBS MEd MRCS

    Roashani has been awarded a Royal College of Surgeons of England Research Fellowship and is looking at restorative proctocolectomy in familial adenomatous polyposis (FAP) and trying to predict outcome by analysis through registry data and also laboratory based methods.

  • Charlene Twum-Barima

    BSc (Hons), MBChB, MRCS

    Charlene is the rectal vaginal fistula (RVF) research fellow undertaking her PhD in the Fistula Research Unit at St Mark’s Hospital.

  • Dakshitha Wickramasinghe

    MBBS MD(Surgery) DM MRCSEd

    Dakshitha is a research fellow reading for his PhD on the role of extracellular matrix collagen in rectal prolapse, under the supervision of Mr Janindra Warusavitarne, Ms Carolynne Vaizey and Prof Alisa Hart.

  • Dotun Ojo

    Dotun is undertaking a PhD in Pilonidal disease, aiming to improve management and surgical techniques and to understand risks predisposing to recurrent disease.

  • Eman Alkizwini

    MBBS BSc (Hons) MRCS

    Eman is currently undertaking research into the reduction of surgical site infections within closed surgical incisions using negative pressure wound therapy, and the associated economic implications under the supervision of Ms Carolynne Vaizey and Mr Janindra Warusavitarne.

  • Isabel Martin

    BSc (Hon), MBChB, MRCS

    Isabel has been awarded a Royal College of Surgeons of England Research Fellowship and will be working within the Polyposis Registry to undertake a PhD on duodenal polyposis at St Mark’s and Imperial College London.

  • James Willsmore

    BSc (Hons) MBBS MRCP

    James is currently a Clinical Research Fellow at St Mark’s under the supervision of Dr Simon Gabe. James’ research interests include intestinal growth factors, improving outcomes for patients receiving parenteral nutrition and metabolic and microbiome changes in intestinal failure. 

  • Jordan Fletcher

    MbChB (Hons) BSci PGCert MRCS

    Jordan is undertaking a PhD, researching the use of 3D virtual and printed modelling in colorectal cancer surgery.

  • Komal Patel

    BSc (hons) MBChB MRCS

    Komal is undertaking her PhD within the Surgical Epidemiology Trials and Outcome Centre (SETOC) at St Mark’s hospital.  Her work centres around investigating and improving the quality of inflammatory bowel disease surgery.  

  • Laura Gould

    BSc(HonS) MBChB MRCS

    Laura is currently undertaking research on nutritional assessment and interventions, their effects on body composition, myopenia and cachexia in patients undergoing curative treatment for complex colorectal cancer.

  • Lillian Reza


    Lillian's research is looking at the various aetiology of fistula disease in ileal pouch anal anastomosis and aim to define characteristic features and specific management for these.

  • Lucia Braz

    BSc (Hons), RD

    Lucia's main research interest is the role of diet and Short-chain fatty acids in Inflammatory Bowel Disease (IBD) and Pouchitis.

  • Mehmet Yalchin


    Mehmet is currently the Inflammatory bowel disease (IBD) clinical research fellow, working on numerous clinical trials and focusing mainly on faecal microbiota transplantation.

  • Misha Kabir

    MBBS, MA (cantab), MRCP

    Misha Kabir completed her undergraduate medical training at Cambridge University and Guy's, King's and St Thomas' School of Medicine. Her research will explore shared clinican-patient decision making when dysplasia is detected during surveillance in IBD.

  • Mohammed Deputy

    MBBS BSc (Hons) MRCS

    Mohammed is carrying out research in the Surgical Epidemiology Trials and Outcomes Centre (SETOC). He is investigating novel approaches for patients requiring surgery for inflammatory bowel disease.

  • Nikhil Ladwa

    MBBS, BSc (Hons), MSc, MRCS

    Nikhil's main research will look at small bowel and colonic adaption in short gut syndrome and the effect of the gut microbiome on these processes.​

  • Nusrat Iqbal

    MBBS BSc(Hons) MRCS

    Nusrat is an Honorary Clinical lecturer at Imperial College Medical School, teaching at Northwick Park Hospital. She is embarking on a postgraduate research degree with St Mark’s Fistula Research Unit, under the supervision of Mr Phil Tozer, Professor Ailsa Hart and Dr Phillip Lung.

  • Rishi Fofaria

    BSc (Hons), MBBS, MRCP

    Rishi hopes to lead a Quality Improvement Programme optimising the delivery and quality of the IBD surveillance programme at St Mark's Hospital.

  • Srivathsan Ravindran


    Srivathsan Ravindran is currently undertaking research focusing on improving safety and reducing error in endoscopy and enhancing non-technical skills training through simulation-based education.

  • Stella Dilke

    BA(Hons) MBChB MRCS

    Stella Dilke is a PhD candidate at St Marks Hospital and has been awarded a grant from BCR, undertaking research on distal feeding; including its biochemistry, microbiome and application clinically.

  • Toby Pring

    BSc(Hons), MBChB, MRCS

    Toby is currently undertaking research into the modification of body composition and prevention of sarcopenia in colorectal cancer as part of the BiCyCle group project.