Dr Diana Tait

Consultant Clinical Oncologist MD FRCP FRCR

Specialism: Breast, Gastrointestinal, Radiotherapy

Available at: Cavendish, Chelsea

Special interests:

  • upper gastrointestinal cancers
  • hepatobiliary
  • colorectal cancer
  • anal cancer
  • breast cancer
  • CyberKnife
  • IMRT


Dr Tait has both a private and an NHS practice at The Royal Marsden. She has been a Consultant Clinical Oncologist at The Royal Marsden since 1988 and has a specialist interest in upper gastrointestinal (GI), colorectal, hepatobiliary, anal and breast cancers. She has a particular interest in GI chemoradiotherapy and the use of modern radiotherapy techniques for optimising treatment including IMRT, CyberKnife and IGRT, providing complex radiotherapy techniques for patients.

She is presently Vice-President and Dean for the Faculty of Clinical Oncology at Royal College of Radiologists, sitting on numerous national committees looking into developing, setting and maintaining national standards to continue and implement modern radiotherapy techniques to improve quality of care for oncology patients.

From 2009-11, she was the Clinical Lead for NICE Colorectal Cancer Guidelines Group, developing the National Guidelines which were published in October 2011. These guidelines are used widely by professionals and patients, nationally and internationally.

Dr Tait’s main research interests focus around using new radiotherapy technologies to improve treatment delivery, reduce side effects and improve patient outcome.

She is Principal Investigator on two clinical trials, one a rectal cancer study which involves intensive follow-up for patients who may be able to avoid rectal surgery by adopting a ‘watch and wait’ policy (Deferral of Surgery trial). She is also Co-Chief Investigator on a further rectal study investigating the best time to perform surgery following pre-operative chemoradiation (6 v 12 trial).

Clinical units