Our Team

The Consensio team is comprised of the UK’s most experienced conflict management and mediation practitioners.

We are a team of workplace mediators, trainers, coaches and consultants who have worked together for many years. Consensio was set up in 2007 by Anna Shields and Alex Efthymiades.

Anna Shields – Director & Founder

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Anna is one of the UK’s most experienced workplace mediators, who has worked in the conflict resolution field for 12 years. Anna started professional life in executive search at Heidrick and Struggles and as a founding partner at Hammond Haspel. Her interest in conflict dates back to studying International History and Politics at Leeds University. She also has a Diploma in Conflict Resolution/Mediation (Distinction) from Birkbeck, holds two mediation accreditations and is certified with the International Mediation Institute.

Anna loves solving Japanese logic problems, playing rusty tennis, cooking for, and spending time with friends and family, and of course mediating!

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Alex Efthymiades – Director & Founder

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Alex has 15 years of experience in the field of organisational conflict resolution and mediation. She has 2 Master’s degrees, including an M.A. in Organisational Psychology from Columbia University. Whilst living in New York, she became a community mediator in the South Bronx, where she saw first hand the benefits of resolving conflict through dialogue. Alex has worked internationally, at the American Red Cross in New York, at a centre for women’s rights in Honduras, and at the United Nations in Geneva. Alex is an accredited workplace mediator and conflict coach.

Alex most enjoys spending time with her famliy, travelling, languages, and regaining her balance through pilates, Yoga and swimming.

Hannah King – Administrative Co-ordinator 

Hannah has been working as Administrative Co-ordinator for Consensio since 2012. Hannah is an OCN accredited mediator and has 11 years experience arranging workplace mediations as well as organising mediation training and coaching. 

Hannah likes to bake, visit warm & sunny places, play tennis and has been learning to knit for a while. 

Sarah Findlay – Client Services Manager

Sarah brings an interesting blend of commercial expertise, HR and people management, plus a BSc in Psychology to her role within Consensio. Professional, relevant and timely communications are what she does best – and she’s always happy to talk to Consensio’s prospects and clients. She has a genuine interest in the role that workplace mediation can play within the business setting, and is never happier than when sharing the benefits of addressing conflict in the workplace.

When she’s not in the office talking to customers, she’s out walking with her cocker spaniel or in the garden tending to her vegetable patch.

Tania Coke – Senior Consultant

Tania has been working with Consensio since its inception, as a mediator, trainer and writer. Currently her work with Consensio focuses on writing articles and researching new ways to think and act in the face of conflict. Tania’s approach to conflict management draws on a career that spans management consultancy and the performing arts. She discovered mediation in 2003, and has since built her practice as a workplace, commercial and community mediator. Now based in Tokyo, she runs mediation and conflict-management workshops in Europe and in Asia. She has accreditations from Mediation UK, CEDR and the Institute of Leadership and Management.

Tania loves the leaves of the ginkgo tree, the colour of persimmon fruit, and the sight of a new moon. Her favourite thing is waking early, making a cup of tea and then going back to bed.

Carolyn Graham – Senior Consultant

Carolyn is one of the UK’s most experienced workplace mediators and trainers. Carolyn has worked as a senior consultant with Consensio since the company’s inception. Prior to that she worked for 25 years as a senior executive in the arts and entertainment industry, in commercial and not-for-profit sectors. She became a CEDR-accredited mediator in 2002 and has mediated hundreds of workplace and employment disputes since then.

Carolyn’s interests include being a season ticket holding supporter of Arsenal FC, singing in the choir Eclectic Voices, cooking, salsa dancing and collecting jewellery.

Macarena Mata – Senior Consultant

Macarena has been working in the field of conflict resolution for the past 12 years. She works as an accredited mediator (workplace, family and community), trainer and conflict coach. Macarena has lectured on conflict theory and self-awareness and reflective practice at Birkbeck College, and is supervisor to LLM students at the University of Hertfordshire. She is also a Professional Practice Consultant and supervisor to mediators. She has been a member of the Board of Trustees with Mediation Hertfordshire for four years, and is member of the College of Mediators, National Family Mediation, Association for Conflict Resolution and Mediators Beyond Borders.

Macarena enjoys walking in the forest with her husband; watching movies about true events, science fiction and meaningful stories; travelling and discovering new places; cooking and eating with friends; tending to her vegetable beds in the garden, and much more!!!

John Gray – Senior Consultant

John is an organisational development consultant and executive coach. John’s specialist coaching areas include leadership, individual performance and effectiveness, organisational change, and strategic planning. John also offers conflict coaching; and his other professional roles include supervision of coaches and mediators; training in supervision skills, and in conflict management; teaching coaching for the Academy of Executive Coaching; and lecturing on leadership and management at the University of York. As a coach he is accredited by the European Mentoring and Coaching Council (Practitioner standard).

John’s interests include running, walking, reading, painting, parenting, 70’s & 80’s music, grassroots green actions and travel. 

Kisane Prutton – Senior Consultant

Kisane is a Chartered Psychologist (Occupational), Chartered Scientist, accredited coach and qualified mediator. She has been working with public and private sector businesses for over 20 years, assisting them to improve performance by focusing on the human factors. Specialising in conflict resolution, mediation and conflict coaching, Kisane also provides executive coaching, change management support and training.

Kisane is undertaking a part-time Ph.D. in the psychology of peace-building and she is a guest lecturer at a number of universities. Kisane’s interests include cooking, photography, tennis and walking.

Danielle Ratcliffe – Senior Consultant

Over 15 years ago, Danielle was inspired by the power of conflict resolution to prevent homelessness in young people.  She worked for a youth charity and established a project that offered services to over 200 mediation and housing services across the UK. Today, Danielle is a qualified trainer, workplace mediator and community mediator.  She has worked across commercial, public and charity sectors, and is noted for her calm and diplomatic approach. 

Danielle’s interests include the theatre, family time, pilates, relaxing with friends and travelling when she has time!

Martha Clarke – Senior Consultant

Martha is an experienced workplace mediator, trainer and conflict coach. Her current role follows a 20-year career in journalism and communications. Martha brings her communications experience, knowledge of global conflict, and academic background in psychology to her work. In addition, she is a volunteer community mediator working in the West London community. Martha has a first class degree in Psychology and a Masters in Organisational Psychology from the University of London.

Martha’s interests include cycling, pilates, rambling, sailing, reading and singing.


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