A Network
of Change


We are a network of consultants and coaches focused on organisational and leadership development, led by James Orrell.

Our people bring different skills and experience to the table. We’re inspired and spurred on by each other, constantly learning new ways and garnering new insights.

This diversity of approaches to organisational development keeps us fresh and on our toes. We didn’t all graduate from the same business school and spend years teaching together. We’re insightful individuals who think differently. Which means that we don’t serve up cookie-cutter solutions.

What’s more, each consultant in the Orrell Consulting network has a network of their own. Who has a network of their own, and so on. This creates an outward ripple of invaluable expertise, experience and excellence, with us sitting at its epicentre.


Meet our consultants

We can work individually or in small teams, mixing and matching our palette of backgrounds and skills. This means we’re perfectly placed to partner with the people who know your organisation best — you and your people. Together, we can consider organisational conundrums from all angles.




James helps leaders and teams become more effective in their roles and take their performance to the next level. This is born from his broad experience in organisational development and aligning people, structures and strategy in changing environments.

His clients include Oxford University Press, (and at consultancy Q5) British Gas, Aggreko and BT.

James has a Masters in Leadership and Consultancy (Psychodynamic and Systemic Approaches) from the Tavistock and Portman in London. Before moving into consultancy, he held executive and leadership roles in FTSE 100 companies, private equity-backed enterprises, and the British Army.


Celina is an organisational consultant and coach with over 20 years’ experience.

She works with international organisations undergoing change, often supporting leaders and teams in times of crisis. Her clients include Lufthansa, Thyssenkrupp, Greenpeace and many middle-sized global companies.

Celina has a Masters in Leadership and Consultancy (Psychodynamic and Systemic Approaches) from the Tavistock and Portman in London, a PhD in Pedagogical Psychoanalysis from Kassel University, and a double degree in Psychology and Romantic studies from Goethe University, Frankfurt.

Based in Frankfurt, Celina speaks German, English, Spanish and French.


Maria is a business transformation and change leadership consultant, with over 20 years’ experience. She brings a pragmatic approach to organisational change, managing hard and soft aspects for sustainable short and long-term results.

Maria has held interim or consultant roles in organisations including OUP, BT, Dyson, Harrods, Liberty, as well as a full-time position at Diageo. Before that, she worked in corporate finance at the Bank of England.

She has an MA in Finance from London Business School and a Degree Cum Laude in Business and Management from Catolina Lisbon School of Business & Management.

Based in London, Maria speaks English, Portuguese and French.