Calculus Capital
UK fund manager running EIS, VCT and inheritance tax funds that invest in small unquoted growth companies
Highlights
- New on EvolcAdded 2026-10-30
About Calculus Capital
Calculus Capital Limited is a UK investment manager, authorised and regulated by the Financial Conduct Authority. Its products are Enterprise Investment Scheme (EIS) funds, a Venture Capital Trust (VCT) and the Calculus Inheritance Tax Solution, which invests in companies providing secured loans to film and television productions. The funds invest in small, unquoted UK trading companies and companies listed on AIM.
Investors buy shares in the funds and receive the UK tax reliefs that apply to EIS and VCT investments. The company focuses on technology, healthcare and creative industries, typically investing between £1m and £3m per business and usually taking a board seat in its investee companies. Named portfolio companies include Wonderhood, Booked it, Ensilitech and Laverock Therapeutics.
The company was founded in 1999 and is headquartered in London. It states that it created the first UK approved EIS fund in 1999 and launched a Knowledge Intensive EIS Fund in October 2022 and the Calculus Inheritance Tax Solution in January 2026.
Product: Calculus EIS Fund, Calculus Knowledge Intensive EIS Fund, Calculus VCT and Calculus Inheritance Tax Solution (ITS) investing in UK unquoted companies.
Jobs at Calculus Capital
Leadership
- Susan McDonald · Chairman and Co-FounderSource: company website
- John Glencross · CEO and Co-FounderSource: company website
- Julie Ngo · Chief Operating OfficerSource: company website
- Dominic Harris · Head of Portfolio ManagementSource: company website
- Francesca Rayneau · Director, Head of Sales and MarketingSource: company website
- Natalie Evans · Finance DirectorSource: company website
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