The WEP, which is non-partisan and plans to work with people across the political spectrum, is the brainchild of broadcaster Sandi Toksvig and Prince Charles biographer Catherine Mayer (“Both have brains the size of planets,” says Walker). A former Reuters journalist, she became involved after realising too little had changed in a generation. “I was having the same conversations around my kitchen table that I used to hear my mum having around our lovely Seventies pine table.” Those covered everything from the everyday sexism of “being unable to walk down the street in peace” to the “difficulties of balancing career and motherhood”.