Global marketing advisory firm promotes senior client leader as it strengthens strategic consulting capabilities amid growing demand for marketing transformation services
Global marketing advisory firm MediaSense has appointed Sam Tomlinson as its new Chief Executive Officer, marking another leadership transition at a time when organisations worldwide are increasingly seeking strategic guidance on media investment, marketing transformation and agency performance.
The appointment follows the departure of Jamie Posnanski, who is returning to the United States for family reasons after leading the company through an important phase of international expansion.
Tomlinson assumes the leadership of one of the world’s leading independent marketing advisory firms after serving as Chief Client Officer, where he played a central role in advising multinational organisations on marketing effectiveness, media investment and organisational transformation.
Before joining MediaSense, Tomlinson was a partner at PwC UK, where he led the firm’s Marketing & Media Advisory practice. He joined MediaSense following the company’s acquisition of PwC UK’s specialist media advisory business, a transaction that significantly expanded the firm’s consulting capabilities and international client base.
MediaSense has, in recent years, pursued an aggressive growth strategy through acquisitions and capability expansion, positioning itself as a strategic adviser to global brands navigating increasingly complex marketing ecosystems.
The consultancy now advises organisations across areas including media strategy, agency operating models, marketing effectiveness, technology, procurement and organisational transformation.
According to Campaign, Tomlinson’s appointment reflects the company’s intention to maintain continuity while accelerating its long-term growth strategy in an increasingly data-driven and technology-enabled marketing environment.
BrandiQ Analysis
Marketing advisory is becoming a strategic Boardroom function. MediaSense’s leadership transition reflects a broader evolution taking place across the global marketing industry. For decades, marketing advisory firms were primarily engaged to conduct media audits, negotiate agency contracts or evaluate advertising expenditure.
Today, their responsibilities have expanded significantly. Modern advisory firms increasingly support boards and executive leadership teams on organisational design, marketing technology, artificial intelligence, data governance, agency ecosystems and return on marketing investment. In many organisations, these decisions now influence enterprise growth as directly as finance or operations.
The marketing operating model is becoming a competitive advantage One important trend highlighted by this appointment is the growing importance of the marketing operating model. Organisations are no longer focused solely on creating effective advertising campaigns.
They are redesigning how marketing functions operate – from agency structures and in-house capabilities to data management, technology integration and performance measurement. This has elevated the role of specialist advisers capable of helping businesses align marketing investment with broader commercial objectives.
Leadership Continuity Supports Client Confidence
Leadership transitions within advisory firms carry particular significance because clients rely heavily on institutional knowledge, strategic continuity and trusted relationships. By appointing a leader already embedded within the organisation, MediaSense signals stability while preserving the expertise developed through recent acquisitions and global expansion. For consulting firms, succession planning has become an important component of client confidence and long-term organisational resilience.
What African Marketing Consultancies Can Learn
The appointment offers valuable lessons for consulting firms across Africa. As businesses embrace artificial intelligence, digital transformation and increasingly sophisticated marketing technologies, clients are demanding advice that extends well beyond advertising execution.
Future growth for African consultancies is likely to come from developing expertise in areas such as marketing effectiveness, customer experience, data strategy, media investment optimisation, AI governance and organisational transformation. Firms capable of combining strategic insight with measurable business outcomes will be better positioned to compete in an increasingly knowledge-driven consulting market.
The Bigger Picture
MediaSense’s appointment of Sam Tomlinson illustrates how leadership within the communications industry is evolving. Marketing today is no longer viewed simply as a creative discipline. It has become a strategic business function that integrates technology, analytics, organisational design and commercial performance. For the global consulting industry, this shift is creating new opportunities for firms that can help organisations navigate increasingly complex marketing environments.
Ultimately, the future of marketing leadership will be defined not merely by the ability to produce effective campaigns, but by the ability to build organisations capable of delivering sustained business growth through smarter, more accountable and more integrated marketing systems.
