About Oxyfen
Strengthening Businesses and the People Who Lead It
Oxyfen exists to support organisations navigating growth, pressure, transition and complexity by strengthening both the visible business systems and the human systems beneath them.
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The Oxyfen Philosophy
Every Organisation Operates on Two Levels
The first is the visible organisation: strategy, systems, structures, financial performance, products, services and operational outcomes.
The second is the human system operating beneath it. This includes leadership behaviour, communication, trust, culture, relationships, decision-making, and an organisation’s ability to navigate pressure and change.
Most businesses invest heavily in improving the visible organisation while overlooking the human system that ultimately determines whether strategy succeeds.
At Oxyfen, we believe sustainable growth occurs when leadership, people, culture and execution evolve together.
Organisational challenges rarely exist in isolation. Strategic priorities, leadership capability, communication dynamics, operational execution and human behaviour are deeply interconnected.
Our work helps organisations strengthen both systems so they can scale with greater clarity, resilience, alignment and long-term effectiveness.
Strategic Advisory
An Integrated Advisory Model for Complex Organisations
Oxyfen combines strategic advisory, leadership development, executive coaching, organisational development, leadership psychology and organisational alignment into one integrated advisory model.
Our work is structured but never formulaic. While many organisational patterns repeat across industries, every engagement is shaped around the realities of the organisation itself.
CEO and executive leadership assessment
Questioning to get strategic clarity
Leadership alignment
Organisational intervention
Executive strategic partnership
Why Oxyfen Exists
Organisations Rarely Struggle Because of Strategy Alone
Oxyfen was founded on a simple observation: organisations rarely struggle because of strategy alone.
More often, growth begins to slow when leadership pressure increases, communication becomes fragmented, decision-making loses clarity, or organisational systems can no longer support the demands being placed upon them.
Through their work with leaders, executive teams, boards and organisations navigating growth, acquisitions, transformation and complexity, John Barnes and Naomi Holdt recognised a recurring pattern.
Sustainable performance requires more than commercial strategy, leadership development or organisational psychology in isolation. It requires an integrated approach that strengthens both the business and the people responsible for leading it.
Oxyfen was created to provide that integration.
Founder | Strategic & Commercial Advisory
John Barnes
John Barnes is a serial CEO with more than 30 years of experience leading complex organisations through growth, acquisitions, restructuring, operational transformation and strategic expansion.
His background spans executive leadership, mergers and acquisitions, alliance development, organisational integration, operational scale, commercial strategy and international business leadership.
John has worked extensively across global and emerging markets, bringing deep experience in executive decision-making under pressure.
At Oxyfen, John supports organisations through moments of strategic complexity, helping leadership teams think clearly, align operationally and execute sustainably.
His work focuses particularly on:
Strategic growth, M&A environments, Executive strategic partnership, Organisational scaling, Leadership alignment
and Operational clarity
Co-Founder | Leadership & Organisational Development
Naomi Holdt
Naomi Holdt is a clinical and organisational psychologist specialising in leadership under pressure, organisational dynamics, executive functioning, communication systems and human behaviour within complex organisations.
Her work focuses on helping leaders and organisations understand behavioural patterns, leadership blind spots, organisational communication breakdowns, conflict avoidance, executive pressure responses, psychological safety within teams and leadership capability development.
Naomi works closely with CEOs and leadership teams to strengthen the human systems required to support sustainable organisational performance.
Her work bridges:
leadership psychology, executive coaching, organisational development, leadership communication, emotional intelligence and behavioural transformation without disconnecting these dynamics from commercial reality.
Why The Partnership Works
Strategic Execution Meets Leadership Psychology
Oxyfen’s strength lies in the integration between strategic execution and leadership psychology.
John and Naomi operate from different disciplines while solving the same organisational challenges from complementary perspectives. This allows Oxyfen to address strategic complexity, operational execution, leadership behaviour, organisational dynamics, human capability, communication systems and sustainable organisational growth as interconnected realities rather than isolated problems.
Start a Confidential Conversation
Oxyfen works with a limited number of organisations at any given time to ensure depth, quality and strategic focus.
If your organisation is navigating growth, complexity, leadership pressure or strategic transition, we invite you to begin a confidential conversation about what comes next.