I am a Consultant General Surgeon at Frimley Health NHS Trust, with a passion for providing high-quality, compassionate care tailored to each patient’s needs.
I specialise in conditions affecting the bowel and abdominal wall, including:
In addition to planned surgery, I am part of a dedicated emergency surgery team, treating patients with urgent and life-threatening conditions. I also carry out colonoscopies and polypectomies, helping with early detection and prevention of bowel cancer.
My medical journey began at the University of Cambridge, where I studied Medical Science, before completing my clinical training at Guy’s, King’s and St Thomas’ Hospitals in London. I went on to complete a PhD in Surgery and Cancer at Imperial College London and undertook advanced surgical training in London and East Sussex. Before joining Frimley, I worked at St Mark’s Hospital, a world-leading centre for colorectal surgery, where I trained alongside internationally recognised experts.
My priority is to provide clear communication, expert treatment, and support throughout every stage of your care.
Avellaneda, N., Maroli, A., Pellino, G., Carvello, M., Tottrup, A., Bislenghi, G., . . . Spinelli, A. (2025). Long-term comparative outcomes after ileocecal resection for inflammatory versus complicated Crohn’s disease. A multicenter, retrospective study (Crohn´s-Urg). Digestive and Liver Disease. doi:10.1016/j.dld.2025.07.009
Nasasra, A., Morrison, T. E. M., Luberto, A., Carvello, M., Williams, K. J., Davies, J., . . . Warusavitarne, J. H. (2025). Recurrence rates after strictureplasty for small bowel Crohn’s disease remain high in the era of biologics. Colorectal Disease, 27(1). doi:10.1111/codi.17224
Avellaneda, N., Pellino, G., Maroli, A., Tottrup, A., Bislenghi, G., Colpaert, J., . . . Spinelli, A. (2024). Short‐term outcomes of surgical treatment for primary ileocaecal Crohn’s disease: Results of the Crohn’s(urg) study, a multicentre, retrospective, comparative analysis between inflammatory and complicated phenotypes. Colorectal Disease, 26(7), 1415-1427. doi:10.1111/codi.17056
Glasbey, J. (2024). A prognostic model for use before elective surgery to estimate the risk of postoperative pulmonary complications (GSU-Pulmonary Score): a development and validation study in three international cohorts. LANCET DIGITAL HEALTH, 6(7), e507-e519. doi:10.1016/S2589-7500(24)00065-7
Picciochi, M., Glasbey, J. C., Li, E., Kamarajah, S. K., Nepogodiev, D., Simoes, J. F. F., . . . Collins, R. (2023). Elective surgical services need to start planning for summer pressures. British Journal of Surgery, 110(4), 508-510. doi:10.1093/bjs/znad033
Adamina, M., Ademuyiwa, A., Adisa, A., Bhangu, A. A., Bravo, A. M., Cunha, M. F., . . . Rodrigo, V. S. D. (2022). The impact of surgical delay on resectability of colorectal cancer: An international prospective cohort study. Colorectal Disease, 24(6), 708-726. doi:10.1111/codi.16117
Williams, K. J., Donnelly, S., Gabe, S., Gupta, A., Holman, R., Preston, S., . . . Mehta, A. M. (2022). Standardized documentation and synoptic reporting of complex intestinal anatomy in enteric fistulation and intestinal failure. COLORECTAL DISEASE, 24(4), 530-534. doi:10.1111/codi.16007
The Vascular and Endovascular Research Network., COVIDSurg Collaborative., & Shalhoub, J. (n.d.). Impact of COVID-19 on Vascular Patients Worldwide: Analysis of the COVIDSurg Data. The Journal of Cardiovascular Surgery: a journal on cardiac, vascular and thoracic surgery.
McLean, K. A., Kamarajah, S. K., Chaudhry, D., Gujjuri, R. R., Raubenheimer, K., Trout, I., . . . Wischhusen, S. (2021). Death following pulmonary complications of surgery before and during the SARS-CoV-2 pandemic. British Journal of Surgery, 108(12), 1448-1464. doi:10.1093/bjs/znab336
Tabiri, S., Kamarajah, S. K., Nepogodiev, D., Li, E., Simoes, J., Sravanam, S., . . . von Fluee, M. (n.d.). Impact of Bacillus Calmette-Guerin (BCG) vaccination on postoperative mortality in patients with perioperative SARS-CoV-2 infection. BJS Open, 5(6), 15 pages. doi:10.1093/bjsopen/zrab131
Khatri, C., Ward, A. E., Nepogodiev, D., Ahmed, I., Chaudhry, D., Dhaif, F., . . . Smart, N. J. (2021). Outcomes after perioperative SARS-CoV-2 infection in patients with proximal femoral fractures: an international cohort study. BMJ Open, 11(11), 1-10. doi:10.1136/bmjopen-2021-050830
Glasbey, J., Ademuyiwa, A., Adisa, A., AlAmeer, E., Arnaud, A. P., Ayasra, F., . . . Aldawbali, M. (2021). Effect of COVID-19 pandemic lockdowns on planned cancer surgery for 15 tumour types in 61 countries: an international, prospective, cohort study. The Lancet Oncology, 22(11), 1507-1517. doi:10.1016/s1470-2045(21)00493-9
Cardiothoracic Interdisciplinary Research Network and COVIDSurg Collaborative. (2021). Early outcomes and complications following cardiac surgery in patients testing positive for coronavirus disease 2019: An international cohort study.. Journal of Thoracic and Cardiovascular Surgery, 162(2), e355-e372. doi:10.1016/j.jtcvs.2021.03.091
COVIDSurg Collaborative Co-authors. (2021). Machine learning risk prediction of mortality for patients undergoing surgery with perioperative SARS-CoV-2: the COVIDSurg mortality score. British Journal of Surgery, 108(11), 1274-1292. doi:10.1093/bjs/znab183
RICOCHET Study Group on behalf of the West Midlands Research Collaborative. (2021). Pancreatic enzyme replacement therapy in patients with pancreatic cancer: A national prospective study.. Pancreatology, 21(6), 1127-1134. doi:10.1016/j.pan.2021.05.299
Glasbey, J. C., Omar, O., Nepogodiev, D., Minaya-Bravo, A., Bankhead-Kendall, B. K., Fiore, M., . . . Scasso, S. (2021). Preoperative nasopharyngeal swab testing and postoperative pulmonary complications in patients undergoing elective surgery during the SARS-CoV-2 pandemic. BRITISH JOURNAL OF SURGERY, 108(1), 88-96. doi:10.1093/bjs/znaa051
Williams, K. J., Moore, H. M., Ellis, M., & Davies, A. H. (2021). Pilot Trial of Neuromuscular Stimulation in Human Subjects with Chronic Venous Disease. VASCULAR HEALTH AND RISK MANAGEMENT, 17, 771-778. doi:10.2147/VHRM.S320883
Bhangu, A. (2021). Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic. COLORECTAL DISEASE, 23(3), 732-749. doi:10.1111/codi.15431
Glasbey, J. C., & Bhangu, A. (2020). Elective cancer surgery in COVID-19–free surgical pathways during the SARS-CoV-2 pandemic: an international, multicenter, comparative cohort study. Journal of Clinical Oncology, 39(1), 66-78. doi:10.1200/jco.20.01933
COVIDSurg Collaborative. (2020). Delaying surgery for patients with a previous SARS-CoV-2 infection. British Journal of Surgery. doi:10.1002/bjs.12050
COVIDSurg Collaborative., & Jiao, L. R. (2020). Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study. The Lancet, 396(10243), 27-38. doi:10.1016/S0140-6736(20)31182-X
Ravikumar, R., Williams, K. J., Babber, A., Moore, H. M., Lane, T., Shalhoub, J., & Davies, A. H. (2018). Neuromuscular electrical stimulation (NMES) for the prevention of venous thromboembolism (VTE). Phlebology, 33(6), 367-378. doi:10.1177/0268355517710130
Harput, S., Christensen-Jeffries, K., Brown, J., Yuanwei, L., Williams, K. J., Davies, A. H., . . . Tang, M. (2018). Two-stage motion correction for super-resolution ultrasound imaging in human lower limb. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 65(5), 803-814. doi:10.1109/TUFFC.2018.2824846
Cheung, W. K., Williams, K. J., Christensen-Jeffries, K., Dharmarajah, B., Eckersley, R. J., Davies, A. H., & Tang, M. -X. (2017). A temporal and spatial analysis approach to automated segmentation of microbubble signals in contrast-enhanced ultrasound images: application to quantification of active vascular density in human lower limbs. Ultrasound in Medicine and Biology, 43(10), 2221-2234. doi: 10.1016/j.ultrasmedbio.2017.05.021
Williams, K. J., Sounderajah, V., Dharmarajah, B., Thapar, A., & Davies, A. H. (2017). Simulated wound assessment using digital planimetry versus three-dimensional cameras: implications for clinical assessment.. Annals of Vascular Surgery, 41, 235-240. doi:10.1016/j.avsg.2016.10.029
Ravikumar, R., Williams, K. J., Babber, A., Lane, T. R. A., Moore, H. M., & Davies, A. H. (2016). Randomised Controlled Trial: Potential Benefit of a Footplate Neuromuscular Electrical Stimulation Device in Patients with Chronic Venous Disease. EUROPEAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY, 53(1), 114-121. doi:10.1016/j.ejvs.2016.09.015
Williams, K. J., Babber, A., Ravikumar, R., & Davies, A. H. (2016). Non-invasive management of peripheral arterial disease.. Advances in Experimental Medicine and Biology, 906, 387-406. doi:10.1007/5584_2016_129
Williams, K. J., Ravikumar, R., Gaweesh, A. S., Moore, H. M., Lifsitz, A. D., Lane, T. R., . . . Davies, A. H. (2016). A Review of the Evidence to Support Neuromuscular Electrical Stimulation in the Prevention and Management of Venous Disease. Advances in Experimental Medicine and Biology, 906, 377-386. doi:10.1007/5584_2016_128
Evans, D. R. S., Williams, K. J., Stratton, P. H., & Davies, A. H. (2016). The comparative haemodynamic efficacy of lower limb muscles using transcutaneous electrical stimulation. In British Journal of Surgery Vol. 103 (pp. 12). London, ENGLAND: Wiley. doi:10.1002/bjs.10158
Williams, K. J., Babber, A., Ravikumar, R., & Davies, A. H. (2016). Non-Invasive Management of Peripheral Arterial Disease. In Advances in Internal Medicine. Springer International Publishing. doi:10.1007/13780_2015_15
Evans, D. R., Williams, K. J., Strutton, P. H., & Davies, A. H. (2016). The comparative hemodynamic efficacy of lower limb muscles using transcutaneous electrical stimulation.. Journal of vascular surgery. Venous and lymphatic disorders, 4(2), 206-214. doi:10.1016/j.jvsv.2015.10.009
Varatharajan, L., Williams, K., Moore, H., & Davies, A. H. (2015). The effect of footplate neuromuscular electrical stimulation on venous and arterial haemodynamics. PHLEBOLOGY, 30(9), 648-650. doi:10.1177/0268355514542682
Wou, J., Williams, K. J., & Davies, A. H. (2015). Compression Stockings versus Neuromuscular Electrical Stimulation Devices in the Management of Occupational Leg Swelling. International Journal of Angiology, 25(2), 104-109. doi:10.1055/s-0035-1558646
Williams, K. (2015). Chronic Intermittent Abdominal Bloating and Change in Bowel Habit: An Eight Year Diagnostic Problem Associated with Intra-Abdominal Adhesions. CUREUS JOURNAL OF MEDICAL SCIENCE, 7(8), 4 pages. doi:10.7759/cureus.294
Williams, K. J., Moore, H. M., & Davies, A. H. (2015). Haemodynamic changes with the use of neuromuscular electrical stimulation compared to intermittent pneumatic compression. PHLEBOLOGY, 30(5), 365-372. doi:10.1177/0268355514531255
Ravikumar, R., Williams, K. J., & Davies, A. H. (2015). Potential clinical applications of electrical muscle stimulation in venous disease. In BRITISH JOURNAL OF SURGERY Vol. 102 (pp. 45-46). ENGLAND, Durham Univ, Durham: WILEY-BLACKWELL. Retrieved from www.webofscience.com
Ravikumar, R., Williams, K. J., Babber, A., & Davies, A. H. (2015). Electrical stimulation of the foot pump: a pilot randomised control trial in patients with chronic venous insufficiency. In BRITISH JOURNAL OF SURGERY Vol. 102 (pp. 6). ENGLAND, Durham Univ, Durham: WILEY-BLACKWELL. Retrieved from www.webofscience.com
Williams, K. J., & Davies, A. H. (2015). Comparative accuracy and reliability of 3D cameras in simulated wound measurement. In BRITISH JOURNAL OF SURGERY Vol. 102 (pp. 47). ENGLAND, Durham Univ, Durham: WILEY-BLACKWELL. Retrieved from www.webofscience.com
Williams, K. J., Ravikumar, R., Babber, A., & Davies, A. H. (2015). Can neuromuscular stimulation relieve symptoms of chronic venous disease, and improve quality of life?. In BRITISH JOURNAL OF SURGERY Vol. 102 (pp. 9). ENGLAND, Durham Univ, Durham: WILEY-BLACKWELL. Retrieved from www.webofscience.com
Wou, J., Williams, K. J., & Davies, A. H. (2015). A comparative study of the effect of graduated compression stockings and neuromuscular stimulation devices in the management of occupational leg oedema. In BRITISH JOURNAL OF SURGERY Vol. 102 (pp. 28). ENGLAND, Durham Univ, Durham: WILEY-BLACKWELL. Retrieved from www.webofscience.com
Williams, K. J., & Davies, A. H. (2015). Pilot trial of neuromuscular stimulation in the management of chronic venous disease. BRITISH JOURNAL OF SURGERY, 102, 20. Retrieved from www.webofscience.com
Williams, K. J., Moore, H. M., & Davies, A. H. (2014). Comparison of intermittent pneumatic compression and neuromuscular electrical stimulation using ultrasound and laser doppler fluximetry. In BRITISH JOURNAL OF SURGERY Vol. 101 (pp. 50). ENGLAND, Univ Cambridge, Robinson Coll, Cambridge: WILEY-BLACKWELL. Retrieved from www.webofscience.com
Williams, K. J., Al-Sakkal, M. N., Alsafi, A., & Davies, A. H. (2014). Massive localized lymphedema – A rare vascular malformation. Vasomed, 26(1), 46-47.
Williams, K. J., & Hayes, A. J. (2014). A guide to oncological management of soft tissue tumours of the abdominal wall. HERNIA, 18(1), 91-97. doi:10.1007/s10029-013-1156-x
Williams, K. J., Ayekoloye, O., Moore, H. M., & Davies, A. H. (2014). The calf muscle pump revisited. JOURNAL OF VASCULAR SURGERY-VENOUS AND LYMPHATIC DISORDERS, 2(3), 329-334. doi:10.1016/j.jvsv.2013.10.053
Moore, H. M., Williams, K. J., Onida, S., & Davies, A. H. (2014). Chronic deep venous valve management in the future. Italian Journal of Vascular and Endovascular Surgery, 21(1), 11-15.
Williams, K. J., Al-Sakkal, M. N., Alsafi, A., & Davies, A. H. (n.d.). Massive localised lymphoedema: a rare vascular malformation. BMJ Case Reports, 2013, bcr2013010060. doi:10.1136/bcr-2013-010060