About Marnie Merrilees | High Performance Psychologist

I'm Marnie Merrilees, a psychologist who has spent more than twenty years inside the minds of people who perform when everything is on the line. My clients include world champion and professional fighters across boxing, kickboxing, K1, Muay Thai, BKFC and MMA, and world-class poker players and WSOP finalists who trust me with the most valuable asset they own: the mind they make their decisions with.

I work remotely with an international client base, wherever in the world your season, series or business takes you.

My work is grounded in psychological science. The brain and body operate as one connected system, producing every thought, feeling and behaviour that shapes performance. Understanding that system, precisely and individually, is how we remove what limits it.

Credentials: Psychologist, registered with the British Psychological Society · Nearing completion of a Professional Doctorate in Sport & Exercise Psychology · MSc Sport & Exercise Psychology (research: motives for at-risk alcohol consumption in professional sportspeople) · Former University Lecturer in Sport & Exercise Psychology, University of Sunderland (2010–2018) · Trained in Internal Family Systems (IFS) therapy · Published in the British Psychological Society's Sport & Exercise Psychology Review · Case-study and research presentations at BPS and PsyPAG conferences.

The work extends beyond the individual. I've advised teams and organisations including Sunderland AFC Football Academy, Gateshead FC, Newcastle Thunder Rugby Club and Monkseaton Football Academy, and wrote and delivered mental-health programmes for a leading Employee Assistance Programme.

Marnie Merrilees with Mick Terrill, then BKFC Heavyweight World Champion — With Mick Terrill, then BKFC Heavyweight World Champion.

Hi, I'm Marnie Merrilees

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