A panel session at Counter Fraud 2026, chaired by Nick Tomlinson of the Public Sector Fraud Authority, brought together four counter fraud leads from across the public sector to discuss insider fraud - how to spot it, how to prevent it, and how organisations need to change. The panel comprised Mike Brown, Head of Internal Investigations at HMRC; Richard Hampton, Head of Intelligence and Fraud Prevention at the NHS Counter Fraud Authority; Nick Jennings, Head of the Hertfordshire Shared Anti-Fraud Service (SAFS); and Rachael Tiffen, Director of Public Sector and Learning at Cifas. Here is a summary of the key points from the discussion: