Dr Alexandra Stewart


Special clinical interest in gynaecological oncology, lower gastrointestinal cancer and high dose rate brachytherapy.



Professional profile

Dr Alexandra Stewart is a Consultant Clinical Oncologist with a special interest in gynaecological oncology, lower gastrointestinal cancer and high dose rate brachytherapy. She qualified in 1997 and trained at Charing Cross and the Royal Marsden Hospital with a Fellowship at Harvard University in Boston. Her clinical interests include the improvement of radiotherapy dose delivery in pelvic cancer, using conformal radiotherapy/brachytherapy. She is currently developing IMRT (intensity modulated radiotherapy) and image guided brachytherapy for cervical cancer at St Luke’s Cancer Centre and introducing rectal brachytherapy.

Research interests
Dr Alexandra Stewart is the local principal investigator on the national and international trials CIRCCA and PORTEC-3. She is currently setting up a trial to examine improved diagnosis in early cervix cancer.

GRACE charity has raised £30,000 for Dr Stewart’s work with brachytherapy patients and is raising a further £50,000 for an ultrasound machine that she will be using in conjunction with Dr Fuad Hussain to examine the ultrasound properties of cervix cancer.

In addition, Dr Stewart is the chair of BRIGHT charity which is fundraising for a papillon machine to improve treatment options in early rectal cancer.

Dr Stewart is course director for the Harvard Medical School annual brachytherapy review which runs annually in Boston, USA. She organises the course, gives lectures and runs practical workshops.

Year qualified

Current NHS post
Consultant Clinical Oncologist, St Luke’s Cancer Centre, Royal Surrey County Hospital NHS Foundation Trust.

Professional memberships
Royal College of Radiologists.
Royal College of Physicians.

Professional memberships
UK National Cancer Research Institute (NCRI) Clinical and Translational Radiotherapy group.
NCRN Prostate Clinical Studies Group.
NCRN Penile Cancer Clinical Studies Bladder Subgroup.
NCRN Renal Clinical Studies Group.
European Society for Therapeutic Radiation and Oncology (ESTRO).
European Cancer Conference (ECCO).
European Institute of Radiotherapy.
International Targeted Prostate Cancer Screening Study (IMPACT).


  • Oncology