Tony Ridley is an international security and risk management professional with references listed. The document discusses evidence that skilled poachers were not favored recruits to become gamekeepers, as the skills required for poaching differ from those needed for gamekeeping. While some knowledge of poaching techniques could help with policing aspects of gamekeeping, managing game resources requires a different skill set. The document also notes that while the phrase "poacher-turned-gamekeeper" is often used to describe bad actors being recruited into security, there is little evidence that this was common practice historically.