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Our leaders

Our leadership team come from a diverse range of backgrounds including ‘big four’ professional firms, private sector and government. Our strength is working with like -minded clients delivering work that aligns with our values and sets new standards.

Pamela Robertson-Gregg

National Managing Partner

Pamela leads OCM’s practice nationally, as well as the the national assurance team, and alliance offering delivering a range of services to both the public and private sector. Prior to joining OCM, Pamela was a partner in a “big four” firm based in Sydney.

Andrew Marsden


Andrew is the co-founder of OCM and leads OCM’s procurement and probity practices nationally delivering pragmatic solutions on all types of transactions. Prior to establishing OCM, Andrew worked with the Independent Commission Against Corruption and spent many years in various areas of youth criminology.

Rory O'Connor


Rory is the co-founder of OCM and leads the delivery of probity services to State Governments in Queensland, South Australia and Victoria delivering many high-profile complex probity engagements. Prior to establishing OCM, Rory was a partner and board member of a “big four” professional services firm.

Nick Iorfino


Nick leads the national workplace conduct and risk team delivering a range of services including investigation, work, health and safety, training, and mediation. Prior to joining OCM, Nick was a senior police officer for many years before transitioning to consulting.

Sarah Mullins


Sarah is a probity and grants management specialist and is OCM’s national local government industry lead. Prior to joining OCM, Sarah worked with a “big four” accounting firm and for the Independent Commission Against Corruption.

Judy Malpas


Judy is an assurance and risk specialist delivering a range of services to the public and private sector. Prior to joining OCM, Judy was a director in a “big four” firm based in Sydney. She is admired for her proactive and hands-on leadership approach both with clients and her team.

Cathy Blunt


Cathy is an assurance and risk specialist. Prior to joining OCM, Cathy worked in a “big four” firm, managed the internal audit function at Griffith University, and she has deep experience advising clients across Federal and State Government agencies. Alongside her broad ranging assurance and risk management focus, Cathy is also OCM’s national education industry lead.

Wayne Gorrie


Wayne leads the Queensland assurance practice. Prior to joining OCM, Wayne worked with several listed companies and professional services firms.