Omnicom’s Nick Garrett promotes Kim Hamilton, hires from Deloitte 

By AdNews | 9 April 2026
 

Kim Hamilton.

Omnicom Oceania has appointed two senior leaders to its executive team, promoting Kim Hamilton to chief marketing and communications officer and appointing Paige Prettyman to the newly created role of chief of staff.

Hamilton expands her remit from chief marketing officer of Omnicom Media Australia, taking on a broader enterprise leadership role across the region covering brand, profile and communications while continuing her involvement in Omnicom Media.

Prettyman joins from Deloitte Digital, where she was managing director. She previously held senior roles at Special Group Melbourne and Clemenger BBDO.

Omnicom Oceania was formed last year, aligning practice areas across Australia and New Zealand including media and creative agencies, PR, performance marketing and production.

Nick Garrett returned to Omnicom from Deloitte Digital, where he was CMO, to run the combined media and creative operation.

"We talk a lot about helping our clients navigate transformation and elevating the role of marketing at an executive level. What’s important is that we’re doing the same ourselves," said Garrett, CEO of Omnicom Oceania.

“These appointments are about putting that into practice, building a business that is more connected, more focused on the customer, and set up to deliver real commercial impact. 

"Kim has proven herself as a leader who delivers, driving growth, shaping our strategic direction and playing a central role in the transformation of our business.

"Paige brings a strong mix of creative, agency and consulting experience, along with a clear understanding of what clients are looking for from partners today."

Hamilton said the agency is building something genuinely different. “More connected, more capable and better set up to help our clients navigate increasing complexity,” she said.

Prettyman said the opportunity to bring together creativity, media and advisory in a genuinely connected way is compelling.

“My time in leadership positions across both advertising agencies and consultancies has shown me how powerful that can be when it's done well,” she said.

Paige Prettyman supplied via Omnicom april 2026

Paige Prettyman 

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