Carrington Brigham is a business advisor and strategist. As Founder and Managing Director of Agenda C, he runs the kind of work that shifts what governments are willing to commit to, what boards are willing to back, and what the public is prepared to accept. His clients include ASX-listed CEOs, political leaders, national advocacy bodies and challenger brands, drawn to a 20-year track record across communications, digital strategy, crisis prevention, policy campaigning and the entrepreneurship of building a firm that delivers across all five.
In 2014, Carrington co-led the national polling work that reframed Australia’s marriage equality debate. Commissioned by Australian Marriage Equality and conducted at Crosby Textor, the research showed for the first time that 72% of Australians supported same-sex marriage, including majorities of Catholics, Anglicans and over-55s. The Sydney Morning Herald reported it as evidence of a hardening national consensus. Strategists and researchers have since cited it as a turning point in the public conversation that led to legalisation in 2017.

Before founding Agenda C in 2019, Carrington led digital strategy at Crosby Textor, the firm behind Prime Ministerial wins in Australia and the United Kingdom, and held senior digital and social media roles at Ogilvy PR and Optus.

Under his leadership, Agenda C has worked with big brands, business companies with national advocacy and industry bodies. The defining case of this period is Affordable Medicines Now for the Pharmacy Guild of Australia, which secured bipartisan election commitments at both the 2022 and 2025 federal elections to lower the PBS co-payment. The maximum prescription cost has fallen from $42.50 to $25 from January 2026, benefiting the 76% of Australians who rely on the PBS. Carrington has also counselled ASX CEOs through reputational risk, advised mayors and other federal and state political leaders, and helped brands and organisations secure policy outcomes they could not deliver alone.

Across the work, the pattern is consistent: research-led strategy, digital-first execution, and campaigns built to convert public attention into measurable shifts in what governments and corporates are prepared to commit to. Carrington also serves as Executive Chair of the Potts Pointer business and community group and on the board of Accessible Beaches Australia.

His view of the craft has not changed since launching Agenda C: “Campaigns create an ongoing narrative for businesses and leaders, developed through purposeful conversations with the public.