Deborah O'Neill

Partner and Head of Digital, Europe, Oliver Wyman

Deborah O’Neill is Head of Digital for UK and Ireland and a partner at Oliver Wyman, where she leads complex digital transformations at the world’s largest companies. She helps her clients build out their engineering and delivery capability, making them self-sufficient and able to make changes more rapidly.

An expert in untethering businesses from technology systems and approaches no longer fit for purpose, Deborah has recently worked on the build and launch of several Greenfield businesses.

She is widely published on issues relating to how financial services companies can free themselves from legacy IT infrastructure, use data to strengthen connections to customers and better use analytics to prepare for AI.

Deborah’s work as a female leader has been recognised with numerous accolades. She is a committed advocate for gender equality who seeks to create mentoring and sponsorship opportunities for future female technologists both within Oliver Wyman and the industries she operates.


Being a leader means many different things to many different people, but for me I see it as helping other people be the best they can be.

Deborah has co-authored a number of ground-breaking articles, including:

Her work as a female leader in technology has been recognised with numerous accolades: