We Change Minds

We Change Behaviour. Great communication cuts through, creates engagement and delivers results. And that demands that you start with a great idea. Born out of an insightful human truth and based on strong strategic thinking that leads to behavioural change. A great idea, not an 'oh dear', capable of expression across multiple channels and delivered in a compelling way. We have a history of creating world class ideas, for clients big and small. From Audi cars to Perth Zoo and everything in between. Across all channels, around the globe.

How we work

How we work graphic

We consider the entire business and all touch points when creating the right idea. Then we build a bespoke team of specialists to help execute. Why pay for what you don't use? As guardians of the idea, we create value by bringing the best skills to the table only when you need them and by leading collaboration, we manage costs and deliver as a single brand team for our clients.


What we do

The Spectator Magazine

Advil Virtual World


Wedding Night.....


Alcatel. Go Play Campaign.


Red Door Challenge - QuickSelect

Hotel Quickly. Airport Digi Posters
Hydralyte. 'Hangover Cure'

World's first VR experience for Advil Liquid Capsules from Matterhorn


Bell Direct Online #2


Hamlet photobooth

Who we are

Matt Kemsley

Matt Kemsley, Founder/Partner

Matt started his career at one of the true global creative powerhouses Bartle Bogle Hegarty. He won numerous creative awards over his 15 happy years there. He later joined Whybin TBWA. Firstly as the creative founder of the Auckland office, before teaming up with Garry Horner to run the Sydney office. Throughout this journey he’s worked on some of the worlds most high profile brands and helped create many globally renowned creative success stories.

matt@matterhornrocks.com    0448 150 767

Garry Horner

Garry Horner, Founder/Partner

Over the last 30 odd years Garry has worked in some of the worlds’ top agencies, including CDP and WCRS in London, Ogilvy’s in NYC as well as DDB, and Whybin TBWA here in Australia. As a creative and ECD, he's worked on some amazing brands and has seen his work recognised at award shows around the world, including ‘Ad of the century’ at Cannes. He has an unquenchable curiosity and passion for the ever evolving industry and has always believed that to succeed you have to embrace change, because these days, you’re only as good as your next idea.

garry@matterhornrocks.com    0419 693 130

Amy Cadwallader, Brand Strategy

Having worked on both local and global clients, spanning pretty much every industry, Amy remains consistent that the most effective work is born when powerful insights drive creative expression. From Pharmaceuticals to fashion and everything in between, Amy’s training as a creative brand strategist ensures the integrity of the brand is always at the centre of everything we do. Amy has also been involved in numerous award-winning campaigns, including several Effie awards for effectiveness as well as the ‘AFA Best Return on Investment’, ‘AFA Gold Pinnacle Effectiveness Award, Cannes Lions and was named B&T Young Achiever of the year, albeit a few years ago now.


Jhonnie Blampied, Brand Strategy

Jhonnie started his advertising career as a Strategic Planner at O&M in London. In 1989 he joined DDB as a Strategic Planner. Six years later he had been promoted to become Executive Chairman and CEO of DDB’s Australian Group of companies. In 2003 he chose to get a bit more balance in his life and quit the top end of town to become a consultant. He saw that Matterhorn was an agency obsessed with changing things for the better for their clients and their brands. He joined the team because he shares this obsession and can see his passion for applied ‘Behavioural Economics’ playing a part in delivering it.


Who we work with

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