Primary Job Title Chief Executive Officer & Co-founder Primary Organization Calculus Capital
Location London, England, United Kingdom Regions Europe, Middle East, and Africa (EMEA) Gender Male
Investor Type
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John co-founded Calculus Capital with Susan McDonald in 1999, creating one of the UK’s most successful, independent private equity firms focused on investing in smaller, proven companies. John graduated from Oxford University with an MA (Hons) in Philosophy, Politics and Economics.


