Oliver helps international aid organisations to manage integrity risks like fraud, bribery, corruption, conflicts of interest, nepotism, theft, terrorist diversion and sanctions breaches. He has conducted investigation and advisory work in this space worldwide, including with international and local NGOs and civil society organisations, regulators, institutional donors, and the UN.
Oliver is a regular writer and speaker on integrity issues in the charity and international aid sectors. His first book, Fighting Fraud and Corruption in the Humanitarian and Global Development Sector is out now. His second, Terrorist Diversion: A Guide to Prevention and Detection for NGOs with Paul Curwell is out in 2020. Oliver is a contributor to Pro Bono Australia, Australia’s non-profit sector magazine, where he writes on integrity issues.
Oliver was the Head of Counter-Fraud for Oxfam GB, where he led the international humanitarian and development organisation’s efforts to reduce fraud and corruption across its 54 operating countries, 31,000 staff and volunteers, and £400m annual budget. A former officer in the UK’s Serious Organised Crime Agency (SOCA, now the National Crime Agency), he is also an accredited, warranted criminal investigator who worked on a number of high-profile and award-winning international investigations and interventions. Prior to SOCA, Oliver was an accredited crime analyst working with two UK police forces. He now consults to the nonprofit, private and government sectors.
Oliver is an Affiliate Member of the Chartered Institute of Public Finance and Accountancy (CIPFA) and an Associate Member of the Association of Certified Fraud Examiners (ACFE). He is currently based in Sydney, Australia.
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