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Dr. Andrew McDowell
Andrew is a psychologist and leadership professional with over 25 years of experience dedicated to purpose-driven leadership. As Chair of our global Leadership Practice, he excels at helping leaders cultivate the mindset and skills necessary to inspire high-performing teams and deliver sustainable, large-scale organisational change. With a rich background in medical education and behavioural change, Andrew pioneered innovative learning techniques before moving his practice to the UK. His deep clinical and academic expertise is matched by his role as Director of WYSE International, where he supports emerging global leaders in creating meaningful, community-focused impact.
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Charles Brook
As the founder and International President of TPC Leadership, Charles is a globally recognised expert who remains deeply committed to the growth of every coach he mentors. He is celebrated for his ability to empower leaders, helping them navigate complex business challenges through creative thinking and performance breakthroughs. Whether advising CEOs of global consultancies or volunteering with the United Nations to develop young leaders, Charles balances a pragmatic, systemic challenge with a warm, supportive presence. His approach is defined by building lasting, high-trust relationships that transform organizational culture while remaining a passionate, lifelong learner himself.
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Hilary Harvey
As a TPC Leadership Partner, Hilary brings a wealth of experience in delivering transformative leadership training across the private, public, and voluntary sectors. With a robust background in learning and development gained at a global management consultancy, she has successfully steered large-scale projects for major institutions like the Department for Work and Pensions. A qualified Executive Coach and respected member of the EMCC, Hilary combines professional rigour with a deep-rooted commitment to social impact. This is further reflected in her pro-bono leadership with WYSE International, where she helps facilitate leadership education in affiliation with the United Nations.
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Diana Whitmore
Diana brings over three decades of profound expertise to her role as a senior trainer, having been personally mentored by the founder of psychosynthesis, Roberto Assagioli. As the President of the Psychosynthesis & Education Trust and a published author, she combines deep academic rigor with a heartfelt mission to empower others. Her extensive background as a UKCP registered psychotherapist and BACP supervisor is complemented by her compassionate work with young people at risk, reflecting a lifelong commitment to the "joy of learning." Currently pursuing her PhD, Diana blends her world-class credentials with a grounded, supportive presence that makes her a trusted guide for professionals across Europe.
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Biran Yilancioglu
Biran is a leading authority in executive coaching and leadership, with a firm belief that emotional intelligence is the foundation of enduring organisational impact. As the Director of Coach Training Programmes at TPC Leadership, she excels at translating complex frameworks into actionable, people-centred practices. Her extensive background includes nearly 15 years in leadership roles within global giants like HSBC and Bayer, providing her with deep commercial insight across multicultural environments. Known for her engaging and challenging style, Biran fosters a psychologically safe space that empowers leaders to lead with authenticity, trust, and a fully realised sense of potential.
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Ruth Sangale
With over 15 years of experience and more than 500 certified hours, Ruth is an EMCC Master Coach and ICF PCC who thrives at the intersection of psychology, creativity, and leadership. Her background in NHS Learning and Organisational Development gives her a unique perspective on patient experience and systemic change, which she now applies to senior leader development and coaching supervision. A dedicated advocate for diversity, Ruth specialises in women’s and BAME leadership, as well as transitions for leaders in the public and INGO sectors. Her approach is defined by a blend of academic rigour—holding an MSc in Creativity, Innovation, and Leadership—and a warm, presence-based coaching style that fosters genuine impact.
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Andrea Cardillo
Andrea is a Managing Partner and ICF Master Certified Coach with over 15 years of experience in leadership development and systemic change. He specialises in supporting C-suite executives and multicultural teams across the banking, pharmaceutical, and humanitarian sectors, including long-term partnerships with various UN agencies. Andrea’s approach is deeply informed by his academic background in philosophy and psychology, allowing him to blend complex behavioural theories with pragmatic, people-centred strategies. As the Global Director of the TPC Leadership Coaching Academy, he is a dedicated mentor and supervisor who empowers leaders to navigate transformation with greater awareness, inclusive practices, and a clear sense of purpose.
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Dr. Nicola Williams
Nicola is a Chartered Coaching Psychologist and ICF Professional Certified Coach with nearly 30 years of experience in clinical and public health leadership. With a doctorate in mental health and a Master’s in Coaching and Development, she specialises in building mental fitness, resilience, and confidence in leaders navigating complex transitions. Her relational and integrative approach creates a space for deep thinking, blending psychological models with skilful challenge to help clients uncover their own solutions. Having served as a national director and policy advisor to the Welsh and UK Governments, Nicola brings a wealth of systemic insight to her work as a supervisor, facilitator, and trusted executive coach.
