Collecting ethnicity data across an organisation, at different levels of seniority, in different functions, and in different HR processes such as recruitment and promotion, is a means for people professionals to understand, assess and measure the diversity of their organisation. Ethnicity data collection will highlight where changes of practice and policy are required and help organisations to set realistic ambitions and targets and to monitor the impact of their diversity initiatives by tracking the changes over time. This report focuses on ethnicity disclosure, the current barriers, the key issues and how these are being overcome, taking into account employee attitudes and beliefs around ethnicity data and its disclosure.