Matilda Emily N. Bagshawe was born on 12 June 1973 in England, UK. She attended local all-girls Catholic schools near her family home in Surrey. She was a single mother at 17, but she won a place at Cambridge University and took Persephone, her ten-month-old baby daughter with her. As a journalist, she went on to enjoy a successful career in London, and contributed regularly to The Sunday Times, Daily Mail and Evening Standard, before turning her hand to novels. Her first book, Adored as Tilly Bagshawe, was a smash hit on both sides of the Atlantic in 2005, and she hasn't looked back since.
Tilly is married Robin Nydes, a US businessman, and the couple have two own sons, Zac and Theo. The family divide their time between their homes in London and Los Angeles. Tilly is sister of the also writer Louise Bagshawe.