Cornerstone Government Relations is part of Cornerstone Group, a national advisory firm providing strategic counsel across government relations, public policy and commercial advisory.

We support organisations to engage effectively with government, parliament, regulators, industry and communities. Our work combines evidence-led strategy, senior judgement and disciplined execution to help clients manage complex policy, political and stakeholder challenges.

Our management team and Advisory Board bring deep, multipartisan experience from senior roles across government, politics, public administration and industry. This breadth of expertise allows us to anticipate emerging dynamics, identify opportunities and provide practical, credible advice.

Firm Specialty

Cornerstone Government Relations delivers integrated government relations and strategic advisory services for organisations operating in complex public policy environments.

We work with clients to shape policy outcomes, manage political and reputational risk, engage decision-makers and stakeholders, and align commercial priorities with government objectives. Our approach is multipartisan, evidence-based and led by senior practitioners, with a focus on clear strategy and practical outcomes.

The firm is supported by an Advisory Board comprising respected former political leaders and senior public policy practitioners. The Board brings perspective from across federal, state and local government, parliament, ministerial office, industry engagement and community leadership.

Its insights strengthen Cornerstone’s advice on matters where policy, regulation, reputation and stakeholder dynamics intersect. For clients the Advisory Board reflects Cornerstone’s commitment to informed judgement, trusted relationships and advice grounded in experience at senior levels of Australian public life.

TAG CONTACTS

Joseph Tannous founded Cornerstone Group in 2011 and has since built it into one of Australia’s leading bipartisan government relations consultancies. He first entered public life in 1999 as the youngest Mayor in New South Wales, before serving in senior roles within the Liberal Party, including on the NSW State Executive and leading several successful State and Federal election campaigns.

Joseph has advised major corporations across diverse industries, cultivating trusted working relationships with leaders at all levels of government. His career blends political insight with practical advocacy and a strong instinct for effective public policy. At Cornerstone, Joseph continues to drive strategy and client outcomes, ensuring the firm remains a trusted partner across the political spectrum.