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Clerkenwell Clinics Limited

UK-based clinical research company running trials for mental health and neurological conditions, including psychedelic-assisted therapy.

Last updated September 28, 2026

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Overview

Clerkenwell Clinics Limited, trading as Clerkenwell Health, is a United Kingdom-based clinical research company focused on mental health and neurological conditions. According to its official website, the company designs and operates clinical trials for conditions affecting the brain, mind and nervous system, including depression, anxiety, PTSD, dementia and other neurodegenerative disorders. It presents itself as "redesigning clinical research for mental health and neurological conditions" and invites participants to join research studies, offering compensation and expert care with no obligation to continue. The company was founded by Dr Henry Fisher (Chief Scientific Officer), Tom McDonald (Chief Executive Officer), Sam Lewis (Chief Financial Officer) and George McBride (Chief Commercial Officer). Its first projects were in the emerging field of psychedelic-assisted therapy, and it states that it opened Europe's first commercial research site dedicated to psychedelic trials, designed specifically to support patients under the effects of psychedelics with dignity and care. That work earned coverage in outlets including The Guardian, The Times, Evening Standard, Sifted and Forbes. While psychedelics remain an important focus, Clerkenwell Health says its model now spans the full spectrum of central nervous system (CNS) and psychiatric conditions, from depression and anxiety to dementia and other neurodegenerative disorders. The company operates from London and positions the UK as a favourable location for innovative drug developers, citing progressive government policies such as the Innovative Licensing and Access Pathway, streamlined regulatory submissions, world-leading academic institutions and one of the richest healthcare datasets globally. Clerkenwell Health reports that more than 50,000 people have started their journey with the company. Participant testimonials on its website describe welcoming, attentive and kind teams, safe and supportive environments, and high levels of patient care throughout trials. The company is privately held and, as of the available evidence, does not disclose a parent company or stock exchange listing.

History

Clerkenwell Clinics Limited, operating as Clerkenwell Health, is a UK clinical research company based in London. It was founded by Dr Henry Fisher (Chief Scientific Officer), Tom McDonald (Chief Executive Officer), Sam Lewis (Chief Financial Officer) and George McBride (Chief Commercial Officer). The company's early work focused on the emerging field of psychedelic-assisted therapy. According to its official website, it opened Europe's first commercial research site dedicated to psychedelic trials, designed specifically to support patients under the effects of psychedelics with dignity and care. This work attracted coverage in The Guardian, The Times, Evening Standard, Sifted and Forbes. Over time, Clerkenwell Health expanded its focus beyond psychedelics to the full spectrum of central nervous system (CNS) and psychiatric conditions, including depression, anxiety, PTSD, dementia and other neurodegenerative disorders. The company positions the UK as a supportive environment for innovative drug developers, citing government policies such as the Innovative Licensing and Access Pathway, streamlined regulatory submissions, world-leading academic institutions and one of the richest healthcare datasets globally. Clerkenwell Health reports that more than 50,000 people have started their journey with the company. Its website features participant testimonials praising the care, safety and support provided during trials. The company is privately held and does not disclose a parent company or stock exchange listing in the available evidence.

  • Founded by Dr Henry Fisher, Tom McDonald, Sam Lewis and George McBride

  • Opened Europe's first commercial research site dedicated to psychedelic trials

  • Expanded model to full CNS and psychiatric spectrum, including depression, anxiety, PTSD and dementia

  • Reached more than 50,000 people who have started their journey with Clerkenwell Health

Products and positioning

Specialist clinical research sites for mental health and neurological conditions, combining patient dignity with breakthrough science.

  • Clinical trials for depression

  • Clinical trials for anxiety

  • Clinical trials for PTSD

  • Clinical trials for dementia and neurodegenerative disorders

  • Psychedelic-assisted therapy trials

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