International Business Consultant and Strategic Advisor

Gary Dewey is a seasoned international business consultant with over 30 years of experience advising organizations across Spain, the UK, India, and the United States. His expertise spans strategic planning, tax advisory, academic leadership, and professional training.

He is the owner and director of Strategy Office, a consultancy that helps businesses improve strategic performance through a structured approach covering development, implementation, and execution. Gary also leads Numerological, a specialist tax consultancy that supports UK nationals with Spanish property in managing their Spanish tax liabilities and filings.

In addition to his consultancy work, Gary is an associate professor at Durham University Business School in the UK, where he teaches corporate finance, management accounting, and international business. He is a frequent lecturer for ACCA, CIMA, and ICAEW, and currently serves as a disciplinary committee member at CIMA.

Gary brings a unique blend of academic depth, strategic insight, and cross-border tax expertise to every engagement.

• Strategy, Finance, Cash flow, Financial Risk.
• Financial Analysis, Managerial Finance, Business Planning,
• Strategic Planning, Management Consulting, Coaching
• Staff Development, Sage, Spanish Tax, Corporate Governance
• Business Risk & Control, Accounting, Tax
• Auditing, Financial Reporting
• Management, Analysis, Financial Accounting

• Strategic Planning
• Business Risk & Control
• Corporate Governance
• Staff Development