John Withers
INTERNATIONAL INVESTIGATOR & MANAGING DIRECTOR, PRIORITY INTERNATIONAL
John Withers, CII, has been leading Priority International as Managing Director since 2013, following an intensive five-year apprenticeship across the UK and Ireland that began in 1991. He’s a licensed investigator with deep expertise in international due diligence, open-source intelligence (OSINT), and global research screening—specializing in commercial, industrial, and financial investigations. John also served as a British Antarctic Territory Magistrate and Field Dive Officer from 2002 to 2012, earning the Polar Medal from the Queen in recognition of his service. His broad geographic—and investigative—experience gives him a rare combination of multicultural insight and strategic capability.
Beyond his firm leadership, John holds prominent international roles. He serves as UK/Ireland Regional Director and Treasurer of the Council of International Investigators (CII), and as the International Regional Director at NALI. A fellow of both the Royal Geographical Society (RGS) and the World Association of Professional Investigators (WAPI), he is widely respected for fostering cross-border investigative collaboration and maintaining the highest professional standards.
Your Guide in These Specialized Courses
Led by our seasoned investigative professionals, these courses combine proven field techniques with practical insights to help you excel in every stage of your investigative career.
This course examines the complexities of conducting investigations that span multiple countries and jurisdictions. Participants will learn how to navigate diverse legal systems, cultural differences, and logistical barriers when handling international cases. Topics include collaborating with foreign law enforcement, securing admissible evidence across borders, understanding international treaties, and managing language and cultural nuances. Case studies will illustrate how investigators adapt strategies for fraud, corporate disputes, missing persons, and other matters that require global reach.
This course examines the complexities of conducting investigations that span multiple countries and jurisdictions. Participants will learn how to navigate diverse legal systems, cultural differences, and logistical barriers when handling international cases. Topics include collaborating with foreign law enforcement, securing admissible evidence across borders, understanding international treaties, and managing language and cultural nuances. Case studies will illustrate how investigators adapt strategies for fraud, corporate disputes, missing persons, and other matters that require global reach.
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