# Calculus Capital: portfolio, investments and team > Calculus Capital is a vc firm based in United Kingdom. 18 investments on record, 3 in the last 12 months, latest Jun 2026. Source: https://millionrounds.com/fund/calculus-capital (Millionrounds; every figure on the page links to its filing or article) United Kingdom · [Investor](https://millionrounds.com/investors) # Calculus Capital Last cheque observed Jun 2026; 18 cheques on record. Email VC firm Deploying now Series A Series B Growth Medtech Healthtech Audio Follow Calculus Capital and see its new cheques in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Ffund%2Fcalculus-capital) Deploying now **75%** of best year **3** **cheques in 12 months**, 18 on record Since the last cheque **159** days **00** hrs **00** min **00** sec Median round **$4.0M** Cheque size, as they say **$1.0M – $3.0M** Rounds led **3 of 18** Sole investor **13 rounds** Mostly in **United Kingdom, 94%** Pitch Calculus Capital ## Calculus Capital highlights - 01 3 cheques in the last 12 months - 02 Mostly Venture and Series A: 77% of its rounds - 03 Sole investor in 13 rounds, median $4.1M ## What they do > Calculus is an EIS and VCT fund manager, investing in innovative UK businesses. From their own website - **Type:** VC firm (from a list, unverified) - **Cheque size:** $1.0M – $3.0M as they say - **Stages:** Series A Series B Growth Pre-IPO - **Sectors:** Medtech Healthtech Audio - **Based in:** London, United Kingdom - **Cold pitches:** Not stated ## The record Every round we can evidence, newest first **18 appearances** - **2026** 3 rounds - **Jun** **[Edify](https://millionrounds.com/company/edify)** Seed · GB · Calculus Capital **$4.0M** *Led* - **May** **[Resurrect Bio](https://millionrounds.com/company/resurrect-bio)** Series A · GB · Calculus Capital **$10M** With 7 others - **Apr** **[Optalitix](https://millionrounds.com/company/optalitix)** GB · Calculus Capital **Undisclosed** *Led* - **2025** 2 rounds - **Oct** **[Trogenix Ltd](https://millionrounds.com/company/trogenix-ltd)** Series A · GB · 4BIO Capital **$94M** With 7 others - **Mar** **[Notify Technology](https://millionrounds.com/company/notify-technology)** GB · TechStartups **$1.9M** *Led* - **2019** 3 rounds - **Aug** **[Money Dashboard](https://millionrounds.com/company/money-dashboard)** GB · FinSMEs **$1.2M** Sole investor - **May** **[Wazoku](https://millionrounds.com/company/wazoku)** GB · Tech.eu **$3.3M** Sole investor - **Jan** **[Essentia Analytics](https://millionrounds.com/company/essentia-analytics)** GB · Bankingtech **$4.6M** Sole investor - **2015** 5 rounds - **Nov** **[Once Upon a Time](https://millionrounds.com/company/once-upon-a-time)** Venture · GB **$3.8M** Sole investor - **Oct** **[IPV](https://millionrounds.com/company/ipv)** Venture · GB **$2.8M** Sole investor - **Oct** **[Mologic](https://millionrounds.com/company/mologic)** Venture · GB **$4.6M** Sole investor - **Aug** **[Synpromics Ltd](https://millionrounds.com/company/synpromics-ltd)** Venture · GB **$3.3M** Sole investor - **Jan** **[Money Dashboard](https://millionrounds.com/company/money-dashboard)** Series A · GB **$3.7M** With 3 others - **2014** 3 rounds - **Nov** **[Avvio](https://millionrounds.com/company/avvio)** Venture · IE **$5.6M** Sole investor - **Jul** **[Wheelright](https://millionrounds.com/company/wheelright)** Venture · GB **$4.2M** Sole investor - **Mar** **[AOMi](https://millionrounds.com/company/aomi)** Venture · GB **$7.6M** Sole investor - **2013** 2 rounds - **Nov** **[Money Dashboard](https://millionrounds.com/company/money-dashboard)** Seed · GB · techcrunch.com **$4.1M** Sole investor - **Jun** **[Horizon Discovery](https://millionrounds.com/company/horizon-discovery)** Series C · GB · horizondiscovery.com **$10M** With 11 others An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor. ## The team Named by the firm itself, on a filing, its Form ADV or its company registration **13 named** AJ **Arthur John Glencross** secretary i Company register since 1999 JH **Julie Hong Nhan Ngo** secretary i Company register since 2021 SR **Susan Rebecca Mcdonald** director i Company register since 1999 DM **David Malcolm Thomson** director i Company register since 2005 DS **Diane Seymour-Williams** director i Company register since 2007 DJ **Doreen Julie Langston** director i Company register since 1999 HC **Herman Constantyn Van Der Wyck** director i Company register since 2004 KE **Kenneth Edwards** director i Company register since 2012 LS **L.C.I. Secretaries Limited** corporate-secretary i Company register since 1999 LS **Lesley Susan Watkins** secretary i Company register since 2002 MT **Mark Thompson** secretary i Company register since 1999 NK **Natalie Krystyna Evans** secretary i Company register since 2019 RM **Robert Martin Davis** director i Company register since 2018 We also hold **13** people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them. ## What the register says From the firm's own filings with the UK company register, which it must file accurately by law - **Companies House:** 03861194, since 1999 ## What they claim to have backed From their own portfolio page (on their website) **0** of 2 we have independently watched raise Codewithfeeling EIS Portal Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded. ## The cheque Series A Series B Growth Median round joined **$4.0M** the round, not its cheque Alone, median **$4.1M** Led 3 of 18 rounds **17%** - **Said size:** $1.0M – $3.0M - **Sole investor:** 13 rounds - **Last cheque:** Jun 2026 Rounds by stage said on their site - Venture *7* - Series A said *3* - Seed *2* - Series C *1* - Series B said *-* - Growth said *-* - Pre-IPO said *-* Cheques by month Led Joined Dec 2023 Nov 2026 **Pitching Calculus Capital?** Put them on your fundraising board with this record on the card, and follow them to hear when they write a new cheque. Add to your CRM *→* ## Recently backed The latest companies Calculus Capital put money into. [**Edify** $4.0M · Jun 2026](https://millionrounds.com/company/edify)[**Resurrect Bio** $10M · May 2026](https://millionrounds.com/company/resurrect-bio)[**Optalitix** Apr 2026](https://millionrounds.com/company/optalitix)[**Notify Technology** $1.9M · Mar 2025](https://millionrounds.com/company/notify-technology)[**Money Dashboard** $1.2M · Aug 2019](https://millionrounds.com/company/money-dashboard)[**Wazoku** $3.3M · May 2019](https://millionrounds.com/company/wazoku) ## Quick answers about Calculus Capital ### What does Calculus Capital invest in? Calculus Capital invests most often at Venture and Series A (77% of the rounds on record), in sectors such as Medtech, Healthtech and Audio. ### How active is Calculus Capital? 18 investments on record, 3 of them in the last 12 months, and it led 3. The most recent was in Jun 2026. ### What has Calculus Capital invested in recently? Its most recent investments on record: Edify (Seed, Jun 2026), Resurrect Bio (Series A, May 2026) and Optalitix (Apr 2026). ### How big are Calculus Capital's cheques? The median round it joins is $4.0M. It says it writes cheques of $1.0M to $3.0M. ### Does Calculus Capital lead rounds? Yes: it led 3 of its 18 investments on record (17%). ### Where does Calculus Capital invest? Most of the companies it backs are in the United Kingdom (94%) and Ireland (6%). ### Is Calculus Capital investing now? Yes: it is actively investing, with 3 investments in the last 12 months. ### What kind of investor is Calculus Capital? Calculus Capital is a VC firm based in London, United Kingdom. ## Raising now? Find the investors who back rounds like yours, and keep every conversation on one fundraising board. Find similar investorsOpen your CRM Built from the rounds we watched, its filings and its own website, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections?slug=calculus-capital) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=calculus-capital)