Professor Trisha Greenhalgh is a retired GP and an internationally recognised academic who works as a professor at the University of Oxford. She has appeared on Woman's Hour and The Today Programme and is the author of over 400 academic papers and 15 textbooks, including the bestselling book How to Read a Paper: The Basics of Evidence-Based Medicine.

Liz O'Riordan is a retired breast surgeon, known for her work in breast cancer awareness by openly discussing her personal experiences in being diagnosed and treated for breast cancer. She has written articles for the Huffington Post, Macmillan, The Pool and Grazia. Her TEDx talk is called ‘Jar of Joy’.