Olivia was elected as Labour Member of Parliament for Reading West and Mid Berkshire in July 2024. She was appointed as Minister for Early Education Minister for Equalities at the Department for Education on 7 September 2025. 

As a Minister, she covers a range of policy areas including all of Early Years policy and delivering on Best Start in Life strategy; school food and breakfast clubs; school attendance; mental health in schools and behaviour; and the use of Artificial Intelligence in education. She also is the Minister responsible for all LGBT+ policies that sit within the Office for Equality and Opportunity. 

Olivia was born in Reading and grew up in the area. Before becoming an MP, Olivia worked in policy and public opinion research, and held senior roles in a range of think tanks and research bodies. She also worked in recent years as Head of Domestic Policy to Keir Starmer. Her passion is putting the public at the heart of policy making.