Million Women Study – 20 Years Million Women Study: 20 Years Later Isobel Barnes: Comparison of screen-detected and interval breast cancers Kezia Gaitskell: Ovarian cancer subtypes Malcolm Reed: Breast cancer in older women Roger Blanks: Interval cancers after bowel cancer screening Rosie Bradley: Endocrine therapy and bisphosphonates in postmenopausal women with early breast cancer Ruth Travis: Shift work and breast cancer Sarah Floud: Disability and uptake of cancer screening Tim Key: Diet and breast cancer Toral Gathani: Recent trends in mastectomy and breast reconstruction Valerie Beral: AgeX progress and future plans