The Post Office Inquiry examined the failures of the Horizon IT accounting system, which led to the wrongful prosecution and conviction of numerous sub-postmasters, causing significant personal and professional harm. Established as a statutory inquiry in 2021, it sought to uncover the causes and consequences of these injustices.

Between 2022 and 2024, Hestia provided psychological support to participants in the Post Office Inquiry. Services included confidential discussions, strategies for managing emotions, and tools for navigating the trauma of recounting distressing experiences. Hestia ensured a supportive environment for all those engaging with the Inquiry.