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Calculus Capital

Europe, England, United Kingdom, London

Description

Calculus Capital is a prominent UK-based private equity fund manager, specializing in creating and managing tax-efficient investment vehicles, primarily Enterprise Investment Scheme (EIS) and Venture Capital Trust (VCT) funds, for individual investors. Established in 1999, the firm has built a strong reputation for backing established, unquoted UK companies with significant growth potential. Their investment approach is geared towards providing growth capital, supporting management buyouts, and facilitating buy-ins across a diverse range of sectors.

The firm's investment strategy focuses on identifying businesses with proven models, strong management teams, and clear pathways to expansion. Calculus Capital is sector-agnostic, having invested across various industries including healthcare, technology, media, business services, consumer goods, and industrials. They aim to partner with companies that can benefit from their strategic guidance and financial expertise, helping them scale operations, develop new products, or enter new markets.

Calculus Capital typically deploys initial investments ranging from £2 million to £5 million, equivalent to approximately $2.54 million to $6.35 million USD, with provisions for follow-on funding to support continued growth. Since its inception, the firm has demonstrated a robust track record, having invested over £250 million (approximately $317.5 million USD) into more than 90 companies. This extensive experience and consistent performance have earned them multiple accolades, including being recognized as "Best EIS Fund Manager" at the Growth Investor Awards on several occasions, underscoring their standing as a leading player in the UK's private equity landscape.

Investor Profile

Calculus Capital has backed more than 67 startups, with 5 new investments in the last 12 months alone. The firm has led 46 rounds, about 69% of its total and boasts 13 exits across its portfolio.

Investment Focus Highlights

  • Concentrates on Series Unknown, Series A, Seed rounds (top funding stages).
  • Majority of deals are located in United Kingdom, United States, Ireland.
  • Strong thematic focus on Biotechnology, Health Care, Software.
  • Led 3 rounds in the past year.
  • Typical check size: $2.5M – $6.3M.

Stage Focus

  • Series Unknown (54%)
  • Series A (15%)
  • Seed (12%)
  • Series B (6%)
  • Post Ipo Equity (6%)
  • Private Equity (4%)
  • Undisclosed (3%)

Country Focus

  • United Kingdom (88%)
  • United States (9%)
  • Ireland (1%)
  • South Africa (1%)

Industry Focus

  • Biotechnology
  • Health Care
  • Software
  • Medical
  • Artificial Intelligence (Ai)
  • Innovation Management
  • Life Science
  • Therapeutics
  • Biopharma
  • Machine Learning
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FAQ

Frequently Asked Questions

Learn who this investor regularly partners with—both firms and angels—and explore their latest activity.

Who does Calculus Capital frequently co-invest with?

Par Equity
Europe, Edinburgh, City of, United Kingdom, Edinburgh
Co-Investments: 3
Eos
Europe, Fife, United Kingdom, Saint Andrews
Co-Investments: 2
Enterprise Investment Scheme Association
Europe, England, United Kingdom, London
Co-Investments: 3
MV
Europe, Warwickshire, United Kingdom, Henley In Arden
Co-Investments: 6
Maven Capital Partners
Europe, Glasgow City, United Kingdom, Glasgow
Co-Investments: 2
Mercia Fund Managers
Europe, Warwickshire, United Kingdom, Henley In Arden
Co-Investments: 2
Downing Ventures
Europe, England, United Kingdom, London
Co-Investments: 3
MA
Europe, Cambridgeshire, United Kingdom, Cambridge
Co-Investments: 2
Scottish Enterprise
Europe, Glasgow City, United Kingdom, Glasgow
Co-Investments: 3
Eli Lilly
North America, Indiana, United States, Indianapolis
Co-Investments: 2

Which angels does Calculus Capital often collaborate with?

David Evans
Oceania, New South Wales, Australia, Sydney
Shared Deals: 1
NW
Europe, England, United Kingdom, London
Shared Deals: 1
NS
Europe, England, United Kingdom, London
Shared Deals: 1
AO
Europe, England, United Kingdom, London
Shared Deals: 1
JM
Europe, England, United Kingdom, London
Shared Deals: 1
JS
Europe, England, United Kingdom, London
Shared Deals: 1
WH
Europe, Hertford, United Kingdom, Watford
Shared Deals: 1
PC
Europe, England, United Kingdom, London
Shared Deals: 1
JM
North America, Massachusetts, United States, Cambridge
Shared Deals: 2

What are some of recent deals done by Calculus Capital?

Laverock Therapeutics

Stevenage, Herefordshire, United Kingdom

Laverock Therapeutics is developing a gene silencing platform for the creation of programmable, allogeneic cell therapies.

BiotechnologyTherapeutics
SeedJun 30, 2025
Booked It

London, England, United Kingdom

Booked It is an online bookings management software that provides marketing solutions for leisure, hospitality and entertainment businesses.

B2BHospitalityLeisure
SeedApr 15, 2025
Amount Raised: $3,297,862
Notify Technology

Wallsend-on-tyne, North Tyneside, United Kingdom

Notify Technology is a company provides Solutions that will transform your business.

Business DevelopmentBusiness Information SystemsInformation Technology
Series UnknownMar 5, 2025
Amount Raised: $1,918,338
Invizius

Edinburgh, Edinburgh, City of, United Kingdom

Invizius provides dialysis treatments and other extra-corporeal treatments for patients.

BiotechnologyHealth CareMedical
Series UnknownSep 23, 2024
Amount Raised: $1,268,273
Optalitix

Camden Town, Camden, United Kingdom

Optalitix is an IT company that provides cloud-based software pricing products for insurance companies and banks.

Artificial Intelligence (AI)Auto InsuranceBankingCommercial InsuranceEducationInsuranceInsurTechLife InsuranceMachine LearningVenture Capital
Series UnknownSep 11, 2024
Amount Raised: $3,000,000
WorkL

London, England, United Kingdom

WorkL provides all the resources you need in one location to find employment, advance your career, connect with others, and communicate.

EmploymentHuman ResourcesRecruitingStaffing Agency
Series AJun 11, 2024
Amount Raised: $2,543,986
Tagomics

Cambridge, Massachusetts, United States

Tagomics transform disease diagnosis through comprehensive multitopic profiling.

BiotechnologyLife Science
SeedFeb 21, 2024
Amount Raised: $8,467,582
MIP Discovery

Bedford, Bedfordshire, United Kingdom

MIP Discovery is a technology leader in the field of Molecularly Imprinted Polymers (MIPs).

Biotechnology
Series AFeb 19, 2024
Amount Raised: $8,811,305
Laverock Therapeutics

Stevenage, Herefordshire, United Kingdom

Laverock Therapeutics is developing a gene silencing platform for the creation of programmable, allogeneic cell therapies.

BiotechnologyTherapeutics
SeedSep 28, 2023
Amount Raised: $16,475,711
Arctic Shores

Manchester, Manchester, United Kingdom

Arctic Shores is a behavior-based assessments provider for employers and companies.

Artificial Intelligence (AI)GamificationHuman ResourcesMachine LearningSoftware
Series BJan 16, 2023
Amount Raised: $7,019,857