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Company History

Careers Company History


One Underwriting was formed in 1975 by Geoff Freeman and John McMurrick. Operations began in a single office, in the heart of the Melbourne Central Business District.

One Underwriting’s relationships with world-class insurance markets and insurers have grown from strength to strength. This has enabled delivery of international securities directly to the regional Australian market.

Prior to Aon’s acquisition of One Underwriting in 2006, the firm had grown to be recognised as one of Australia’s largest privately owned insurance broking companies.

Find out more about Aon


Today, One Underwriting operates solely as a managing general agency business, delivering insurance solutions only to the retail broking market. One Underwriting service their entire portfolio of 250 insurance brokers and their clients from their office locations in Melbourne, Sydney and Brisbane.


One Underwriting is committed to developing long-standing and reliable business relationships with their insurance broker network. Three core values underpin the One Underwriting tradition: trust, integrity and innovation.

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