Andrew Day

Partner

Andrew is a consultant, facilitator and coach with over 30 years of international experience, both as an internal and external consultant. He helps leaders design and develop their organisations strategically, specialising in leadership team facilitation, executive coaching, and participative organisational development.

His approach to organisation development is encapsulated by his belief that ‘effective and ethical change processes create space for people to participate, take responsibility, and co-create.’

Andrew’s diverse client base spans the private, public, and third sectors, with recent clients including Siemens, BP, GSK, the NHS, several UK government agencies, leading universities, and renowned organisations such as Blue Cross, Cancer Research UK, and multiple UN agencies.

A Chartered Psychologist, Andrew holds Doctorates in both Occupational Psychology and Counselling Psychology/Psychotherapy. He is also an accredited executive coach with professional training in organisation design, team facilitation, consulting, and group dynamics. In addition to his consulting work, he previously led Ashridge Business School’s Organization Development practice and managed Ford Motor Car’s European OD team.

Andrew is a seasoned researcher with published work in executive coaching, leadership, and organizational change. He has taught on the Ashridge Master’s programs in Organizational Change and Executive Coaching and continues to contribute to the academic and professional development of leaders worldwide.

Andrew speaks intermediate Greek and lives in London with his wife, daughter, and son.

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The Team


Sophy Pern


Partner

Sophy is an international consultant, facilitator and executive coach. Working with executive leaders and teams on strategy engagement, organisation design and operating models, culture change and team development. She develops Organisation Development and Design capability in-house in client organisations, and with professional bodies across Europe.

More about Sophy     LinkedIn


Mark Emdin


Partner

Mark brings a rare mix of rigour, warmth, and practical insight to the complex work of aligning leadership, structure, and culture. A consultant, facilitator, and team coach, he specialises in untangling organisational complexity, redesigning operating models, and enabling senior teams to perform at their best.

More about Mark     LinkedIn


Tim Haynes


Associate Partner

Tim is a skilled consultant, group facilitator, coach, and accomplished data-driven Organisational Design & Development leader with close to three decades of experience in FTSE Top 10 as well as high-growth global companies. Tim has operated as an internal organisational consultant and leader on numerous major change efforts over the years.

More about Tim     LinkedIn


Lindsey Masson


Associate Partner

Lindsey is an international OD Consultant & Coach. She particularly works in the areas of change, leadership, team and one-to-one coaching. Lindsey has a wide range of consulting and facilitation experience partnering with organisations and teams that need to become more effective in creating and delivering on strategy and enabling greater ownership of change.

More about Lindsey     LinkedIn


Hélène Casanova


Associate Partner

Hélène Casanova is a seasoned expert in organisational transformation, cultural change, and leadership development, with a distinctive background in finance that brings a data-driven, business-oriented approach to HR and OD strategy. She has led large-scale change management, M&A integrations, and talent development initiatives across multiple industries.

More about Hélène     LinkedIn


Sander van Muijen


Associate Partner

Sander van Muijen is a seasoned consultant in leadership & change, executive coach, senior leadership team coach, as well as researcher and lecturer. He specialises in top team effectiveness, adaptive leadership, and large-scale culture and change programs. His work blends organisational insight with deep personal inquiry.

More about Sander     LinkedIn


Olivia Margo


Associate Partner

Olivia specialises in organisational dynamics and leadership. She offers executive coaching, supervision, and exec team coaching. Clients present with a wide range of challenges related to the complexity of large-scale operations, an uncertain context, shifting paradigms of leadership, and personal dilemmas.

More about Olivia     LinkedIn


Simon Martin


Associate Partner

Simon is a strategic organisation development and design consultant who works internationally supporting clients in transforming their organisations and developing learning cultures. Common areas of focus for his work include strategy engagement, organization design, leadership, executive team development and culture change.

More about Simon     LinkedIn

For more information contact:
hello@ammalo.org

Want to speak to one of the team?  Drop us a line on hello@ammalo.org and we’ll be in touch.