The PROSPECTIVE clinical trial builds on the success of an earlier study, PROSPECT, which involved participants with a single low-risk breast cancer undergoing an MRI scan before surgery. Early findings from the PROSPECT trial were promising: only 1 out of 101 participants experienced a recurrence within the first five years, even without receiving radiotherapy - much lower than expected. PROSPECTIVE is the next phase of this important research and is now open to people who: - Are aged 50 or ove