Mr Anthony Antoniou

Mr Anthony Antoniou is a Consultant Laparoscopic and Colorectal Surgeon at St Mark's Hospital Harrow and the Central Middlesex Hospital and he previously played a key role in developing the Colorectal Unit at the world-leading Royal Marsden Hospital.


He studied at Cambridge University before completing his medical training in East Anglia, the South East of England and London. While training in London, Mr Antoniou was affiliated with a number of major teaching hospitals, including King’s College Hospital and St Mary’s Hospital, where he undertook a laparoscopic fellowship. He became a Fellow of the Royal College of Surgeons in 1996.  He was appointed as a Consultant at The Royal Marsden Hospital in 2006. After completing five years as a Senior Clinical Lecturer at The Institute of Cancer Research/ The Royal Marsden Hospital he took up his current position at St Mark's Hospital, Harrow.

Mr Antoniou specialises in 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.  He specialises in the following surgical procedures:

  • Conventional / open surgery
  • Laparoscopic (‘keyhole’) surgery
  • Recurrent cancer surgery
  • Anal surgery
  • Endoscopic (‘telescopic’) surgery, including gastroscopy, colonoscopy, OGD & flexible sigmoidoscopy
  • Removal of polyps

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

His is an Associate Member of the Royal Society of Medicine, theAssociation of Coloproctology of Great Britain and Ireland, the Association of Surgeons of Great Britain and Ireland and the Association of Laparoscopic Surgeons of Great Britain and Ireland.

He consults privately at The Harley Street Clinic and at the Lister Hospital and Clementine Churchill Hospital.