Thank you for your interest to take part in Cancer Loyalty Card Study

The recruitment to the study is now closed. 


Our Aim
Ovarian cancer patients often report treating their symptoms with over the counter medication, and/or changing diet before seeing a health care professional. It is important to understand when, how long, and how much compared to healthier women. This is not known. 

The primary goal of this study is to investigate if shopping history on loyalty cards collected by two high street retailers can be used objectively for cancer research. 


We will compare up to 6 years of shopping history of
500 women with ovarian cancer
500 women without ovarian cancer
using the information collected on the loyalty cards of the two UK based high street retailers: 

what it involves

We would like you to complete and submit our secured and confidential
  • Informed study consent 
  • Informed consent providing permission to request your shopping history from the retailers
  • An ovarian cancer risk questionnaire
  • Identity verification documents (proof of ID and address) for the retailers to match your information. 


  1. Women living in the UK
  2. 18 years of age and older
  3. who have not been diagnosed with ovarian cancer
  4. have at least one loyalty card from Boots and/or Tesco.  

Note: You don't have to be a frequent user or could be buying for everyone else in your household. Matching patients and healthy volunteers will account for similarities and differences. 

Cancer Loyalty Card Study Participant Information Sheet