

About Us
Cooper Griffin Mediation is a new mediation service formed by Sarah Changizi-Cooper and Bill Griffin, two trained mediators working towards accreditation. Our goal is to maximise empathy and efficiency, carefully balancing the practical issues with the emotional.
We work throughout London, the Home Counties and the South West of England.

Sarah Cooper
Sarah co-leads Cooper Griffin with a blend of calm authority, empathy and practical expertise that clients immediately trust.
A trained Family Mediator with National Family Mediation, she brings a strong foundation in child-focused, trauma-informed practice and a deep understanding of what families need during separation.
Her background spans senior roles in mental health programme delivery, entrepreneurial leadership and high-level operational support in fast-paced complex environments. This mix gives Sarah a unique ability to organise complexity, communicate with clarity, and support people through emotionally charged situations.
Clients value her steadiness, discretion, and her instinct for making overwhelming processes feel manageable. She is committed to helping people move from crisis to clarity—and ultimately to a future that feels secure, stable and theirs again.
Calm, clear, and deeply empathetic, Sarah ensures every client feels supported at every step of their journey.

Bill Griffin
Bill brings a rare blend of senior leadership experience, creative strategy, and mediation expertise to Cooper Griffin.
His background includes decades in executive roles across media, marketing and brand development, where he led complex teams, navigated high-pressure decisions and developed a reputation for calm, clear-headed problem-solving.
As a qualified family mediator and an experienced facilitator, Bill combines professionalism with deep empathy. He understands the emotional and practical realities of separation and is skilled at helping people regain stability and direction when life feels uncertain.
Clients value his steadiness, discretion and ability to turn confusion into clarity. Bill’s strategic insight and human-centred approach make him a highly effective guide for anyone moving from crisis toward a more confident, secure future.
Practical, thoughtful and quietly capable, Bill helps clients find clarity when they need it most.
Contact Us
Get in touch whenever required and we will get back to you very shortly.
© 2026 Cooper Grffin Mediation | All Rights Reserved
Cooper Griffin work throughout London, the Home Counties and the South West of England.
Mediation is also avilable online at any time.


