Call us for an appointment 020 3137 2890 5 Devonshire Place, London

I wish you a warm welcome to my website.

Although no-one wants to be in a situation where they require surgery, I believe minimising discomfort and anxiety can make a big difference for patients. I really want you to feel at ease throughout the whole journey; from referral by your GP to aftercare.

Please get in touch if you have any questions or wish to book a consultation.

Anthony Antoniou BSc MB BChir MS FRCS(Gen)


Anthony Antoniou is a consultant laparoscopic ans colorectal surgeon at St Mark's Hospital, Harrow and Central Middlesex Hospital. He also consults and operates regularly at The Harley Street Clinic, The Lister Hospital and The Clementine Churchill Hospital.

Mr Antoniou's practice covers all aspects of colorectal and general surgery as well as acute general surgical emergencies. His main areas of interest  include laparoscopic (‘keyhole’) colorectal surgery; treating patients with colon and rectal cancer; and endoscopic (‘telescopic’) procedures.

Having graduated from Cambridge University in 1992, he trained in East Anglia, the South East of England and London. While training in London Anthony was affiliated with major teaching hospitals such as King’s College Hospital and St Mary’s Hospital (where he undertook a laparoscopic fellowship at the Hamlyn Unit), prior to his consultant appointment at The Royal Marsden Hospital in 2006. He achieved FRCS in 1996 and was awarded an MS in 2006. After completing five years as a Senior Clinical Lecturer at The Institute of Cancer Research/ The Royal Marsden Hospital he took up a position at St Mark's Hospital, Harrow.

Mr Antoniou has been instrumental in building the colorectal unit at The Royal Marsden Hospital, a world leading cancer hospital, and this unit now treats local, national and international patients. He has also played a key part in introducing laparoscopic / minimally invasive colorectal surgery to The Royal Marsden, developing its endoscopy unit  and promoting a multi-disciplinary approach to patient care for enhanced outcomes. At At Mark's Hospital Mr Antoniou's main focus is on the treatment of colo-rectal cancer laparoscopically as well as performing surgery for locally advanced and recurrent colo-rectal cancer.

Mr Antoniou has a number of clinical and research interests within the field of colorectal surgery.

Clinical interests
•    Colorectal surgery
•    Laparoscopic (‘keyhole’) surgery
•    Colon and rectal cancer surgery
•    Locally advanced and recurrent colo-rectal cancer surgery
•    Anal surgery including anal cancer
•    Inflammatory bowel disease (ulcerative colitis & Crohn’s disease)
•    Functional bowel disease and motility disorders
•    Diagnostic and therapeutic endoscopy (gastroscopy, colonoscopy, OGD & flexible sigmoidoscopy)
•    Colon cancer prevention including bowel cancer screening and removal of polyps by colonoscopy
•    Small bowel conditions (Crohn's disease, polyps, tumours, bleeding & strictures)
•    Gastrointestinal bleeding
•    Radiation proctitis
•    General surgery

Procedures performed
•    Conventional / open surgery
•    Laparoscopic (‘keyhole’) surgery
•    Recurrent cancer surgery
•    Anal and trans-anal surgery
•    Endoscopic (‘telescopic’) surgery (gastroscopy, colonoscopy, OGD & flexible sigmoidoscopy)
•    Removal of polyps by polypectomy

•    BSc (Hons) – Sherrington School of Physiology, St Thomas’ Hospital
•    MB BChir – University of Cambridge
•    FRCS (Gen Surg) – Royal College of Surgeons of England
•    MS – University of London

Membership of learned societies

•    Associate member of The Royal Society of Medicine (RSM)
•    Associate member of The Association of Coloproctology of Great Britain and Ireland (ACPGBI)
•    Associate member of The Association of Surgeons of Great Britain and Ireland (ASGBI)
•    Associate member of The Association of Laparoscopic Surgeons of Great Britain and Ireland (ALSGBI)

Research interests
Mr Antoniou’s current research interests include enhanced recovery for colorectal patients following surgery. He is also collaborating with Imperial College in the field of metabonomics in the hope of identifying novel biomarkers in colorectal cancer, with the ultimate aim of developing targeted therapies to treat this disease.

Mr Antoniou teaches at both undergraduate and postgraduate levels. He was head of undergraduate surgical teaching at Chelsea and Westminster Hospital for Imperial College students. He also supervises MD and PhD students.