In 2017, Raafi-Karim Alidina developed a tool to quantitatively measure inclusion at work. It has been statistically validated and used in 30 countries and 20 languages. In this presentation Alidina will use the case study of a U.K. financial organisation of ~4000 employees to show that the lack of inclusion of marginalized racial groups was indeed about race, and not about socioeconomic background (a common conflation in the U.K.) — low SEB white employees were more included than high SEB employees of colour. Further, they were able to disaggregate the experiences of different groups of colour, showing that Black employees (particularly Black women) were more excluded than any other racial group (indeed, even within the Black population in the U.K. it is known that Blacks of Caribbean descent have different experiences than Blacks of African descent), which specifically affected their exposure to and psychological safety with senior employees and executives. As a result, a specific intervention was developed to help increase exposure of high-potential Black employees to senior members of the firm — a sponsorship program — which ran six times over two years. This resulted in a 67 percent increase in the promotion rate of Black employees across the organisation.