Caroline Criado Perez is a British feminist activist, journalist, and author. She is best known for her successful campaign to have a woman featured on British banknotes. She is also a prominent advocate for women's rights, particularly in the areas of online abuse and gender equality. She has written extensively on these topics, including her book Invisible Women: Exposing Data Bias in a World Designed for Men. She is a frequent speaker at conferences and events, and has been recognized with numerous awards for her work. She is a passionate advocate for women's rights and continues to fight for gender equality.