Gwilym Ellis

Lead Trainer
Role at Trilateral

Gwilym leads the Trilateral Research training offering which ranges from bespoke behaviour change programmes to instructing client teams on our state-of-the-art AI solutions.

His background was in corporate consulting for clients including JPMorgan, Credit Suisse and Pfizer.  He then moved his focus to training, first as a teacher and then holding trainer positions in the second and third sector, most recently at Save the Children.


Gwilym brings his research skills from his legal career.  He has previously designed and led behaviour change programmes for clients including the NHS and the Department of Health.

He holds a BSc in Physics and was admitted to the Bar in 2006.

Gwilym’s passion is teaching the Thought Leadership skills that help clients to persuade and spread their message, including Speaking with Impact and Storytelling.

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