How long will we retain the data?

Collection of data from the study participants completed in 2016. Additional cancer registration data was obtained from Public Health England in 2017. Analysis of the dataset will continue until the end of December 2022. It is a requirement of Imperial College London, which is the organisation responsible for this study, that we hold study data for 10 years after the end date. We therefore plan to hold the data for this study until December 2032.