Finance is an area still dominated by men despite figures indicating the opposite. This study wishes to investigate why women would work in investment banking (IB), but not progress into professional roles. Eighteen female employees in three banks in London were interviewed, to explore how gender diversity could be tackled within the sector. The research revealed that senior management teams (SMTs) avoid hiring women as managers because they have to “interrupt” their career due to maternity and are often unable to reconcile their family commitments with the long working hours required. The article offers recommendations for HR managers and SMTs in Finance.