Top 138 Cyber Security Angel Investors In The UK (2026)
Find active angel investors in your sector
6 min read
Explore angel investors with a focus on cybersecurity — including ex-CISOs, security founders, and technical operators backing UK startups in threat detection, SOC tools, and cloud resilience.
This table lists angels investing across cyber, privacy, and compliance.
📊 Use this list to:
- Find UK angels in cybersecurity
- View their startup interests: threat intel, cloud infra, DevSecOps
- Use filters to sort by location and expertise
- See LinkedIn and past investments
👉 Looking for angel investors in other sectors? Check out the full angel investors database, or explore the cyber security landscape with our curated lists of cyber security startups, cyber security events, and venture capital firms investing in cyber security — or view the full cyber security investor hub.
138 most active UK cyber security angel investors
Angel Investors (name, investment focus, portfolio, contact)
*These angel investors have publicly mentioned their interest in angel investing or are members of angel networks. (Last updated: May 2026)
| Cyber Security Angel Investors | Location | Connect | Investment Focus | Startup Investments |
|---|---|---|---|---|
Henry Irish Angel investor with a strong focus on sectors including AI, cyber security, data, fintech, heal... |  Brighton and Hove | Amelio, Anterior, Apron, Artificial Societies, Awell, Borderless...more startups | ||
William Armitage Angel investor with a diverse investment portfolio spanning automotive, healthcare, education, ... | London | carwow, eMoov, Great British Chefs, idio, KisanHub, Lingumi...more startups | ||
Brendan Gill Angel investor with extensive experience in over 100 startups across various sectors, including... | London | Climate X, Lowdown, Fella, ChangeEngine, Zinc Work, Gilion...more startups | ||
Serge Chlaramonte Serge Chiaramonte is an early stage tech angel investor and advisor. He is known for his invest... | London | Capdesk, Carmoola, Carmoola,Credit Kudos, Contingent, Credit Kudos, Dishpatch...more startups | ||
Errol Damelin Errol Damelin is an entrepreneur and investor, having founded, served as CEO, chaired, or been ... | London | Retail and Commerce, Property and Construction, Healthcare, Human Resources, Finance, Insurance...more sectors | Cazoo, CityMapper, Demyst, Elliptic, Farewill, HiBob...more startups | |
Eda Leka Angel investor with extensive experience in consumer products, B2C tech, and eCommerce scale-up... | London | CodeFirstGirls, Ensilitech, Chemastery, Kuai Commerce, Flexa, Placed...more startups | ||
Ian Ellis Ian Ellis is a seasoned business angel specialising in enterprise technology and cyber security... | London | Quantly AI, Lunar Dev, Yes-Security, Magic Orange, Valarian / formerly WorldR, HoneyDew...more startups | ||
Robert Marshall Angel investor with a strong focus on AI, cybersecurity, software, and healthtech. With a portf... | Cambridge | Cambridge Nutraceuticals, Censo Biotechnologies, Oxford Space Systems, WorkFinder, Arachnys, Audio Analytic...more startups | ||
Greg Marsh Greg Marsh, a prominent figure in entrepreneurship and venture capital, has made diverse contr... | London | Logistics, Transportation, Supply Chain, Food and Beverage, Finance, Property and Construction...more sectors | Deliveroo, flatfair, Hokodo, Onfido, Weezy, Communion...more startups | |
Michael Pennington Michael Pennington plays a significant role in the future of UK tech, with investments in a wid... | London | Breedr, Cable Tech, Carmoola, Gospel Technology, HomeTree, Koru Kids...more startups | ||
Chris Mairs Computer scientist and Fellow of the Royal Academy of Engineering. Venture Partner at Entrepren... | Wiltshire | AimBrain, Borderless, Credit Kudos, FabricNano, Hubble, Loyalty Bay...more startups | ||
Mark Ransford Angel investor specialising in fintech, with a focus on pre-seed, seed, and occasionally Series... | London | BibliU, Damisa, Fluidly, Incredible, Lendable, Privitar...more startups | ||
Zeynep Yavuz Angel investor with a focus on technology and healthcare sectors. Known for supporting early-st... | London | Ramp.Network, Yoco, stitch.money, Truelayer, two.inc, pledge.io...more startups | ||
David Stroud David Stroud extends his expertise and financial resources to various software companies, aidin... | London | Beyonk, Bodytrak, Gripable, Hello Lamp Post, Looper Insights, Pango...more startups | ||
Jeff Crusey Angel investor with a focus on investments in AI, machine learning, cyber security, and softwar... | London | Amali Systems, Castelion, True Anomaly, Danti AI, Zephr, Epsilon3...more startups | ||
Matt Clifford Matt Clifford is the Prime Minister's Adviser on AI Opportunities and co-founder of Entrepreneu... | London | Claimer, Echobox, Notpla, Permutive, Phasecraft, Stackfix...more startups | ||
Tim Sadler Tim Sadler is the Group Vice President & General Manager of Tessian Group, having co-founded an... | London | Nomio, Riff, Surfboard, Thirdfort, Tracebit, Userled | ||
Richard Grethe Angel investor with nearly 30 years of experience in the healthcare and pharmaceutical sectors,... | London | Lexverify, Focus Pharmaceuticals, Mobeus VCT, AMCo, Random42, Graphite Capital | ||
Grace Cassy Grace Cassy is the Co-Founder at CyLon and an angel investor in deep tech, with investments in ... | London | Immersive Labs, Tessian, SlashID, Utila, Treeconomy, Spexi | ||
Stephanie Peritore Stephanie Peritore is a Prime Finance & Delta 1 & ETF Origination & Strategy professional in EM... | London | Hyfe Foods, Evo Foods, Loki, Passion Capital, The Pack, Pip & Nut | ||
James Chillman Angel investor with extensive experience in cloud services, digital marketing, IT support, disa... | Manchester | Fergus, Cloud Academy, QA Limited, UK Backup, Vysiion | ||
Arvind Siva Angel investor with a strong focus on early-stage angel investments in private markets, particu... | London | Cybersecurity, Fashion technology, Artificial intelligence, Financial technology, AI, Cyber security...more sectors | Fractal, Innerworks, Hey Savi, Perplexity.AI, Numarqe | |
Pete Hutton Pete Hutton is the Chairman at Agile Analog, Cambridge GAN Devices, and Xampla. He is an experi... | UK | ArchForm, EnteroBiotix, MiAlgae, Pavegen, Trojan Energy | ||
Richard Little Angel investor and entrepreneurial non-executive director with a strong focus on B2B fintech an... | UK | CyberSmart, Concirrus, Exonar, OVO Group, Thought Machine | ||
John Hornby John Hornby is a non-executive director and charity trustee with extensive experience in both t... | London | Crowdfunder, Nutmeg, Pavegen, Vita Mojo | ||
Carl Rigby Angel investor with a focus on tech organisations, specialising in consultative sales and marke... | Bath | Optitune, Veracity, Cohesion, uGreen | ||
Mike Milner Angel investor with a focus on early-stage investments in sectors such as quantum computing, ar... | London | Aegiq, Hey Savi, Perplexity.AI, Fractal | ||
Jess McAllister Angel investor with a strong background as an early employee at Uber and Intercom, now actively... | UK | Hopin, Darktrace, Claystack, Sharechat | ||
David Cleevely David Cleevely CBE FREng, FIET is a distinguished entrepreneur and investor, holding chairmansh... | Cambridge | Axol Bioscience, Thought Machine, Privitar, WorkFinder | ||
Eva Tarasova Eva Tarasova is a VC investor open to new work opportunities, specializing in biotech, life sci... | London | Simba, edgify, wise, Kair |
Showing 1 - 30 out of 138 angel investors
*These angel investors have publicly mentioned their interest in angel investing or are members of angel networks. (Last updated: May 2026)
Angel investors: 30 /138🔒
Filter by sector...▼
| Cyber Security Angel Investors | Location | Connect | Investment Focus | Startup Investments |
|---|---|---|---|---|
Henry Irish Angel investor with a strong focus on sectors including AI, cyber security, data, fintech, heal... | Brighton and Hove | Amelio, Anterior, Apron, Artificial Societies, Awell, Borderless...more startups | ||
William Armitage Angel investor with a diverse investment portfolio spanning automotive, healthcare, education, ... | London | carwow, eMoov, Great British Chefs, idio, KisanHub, Lingumi...more startups | ||
Brendan Gill Angel investor with extensive experience in over 100 startups across various sectors, including... | London | Climate X, Lowdown, Fella, ChangeEngine, Zinc Work, Gilion...more startups | ||
Serge Chlaramonte Serge Chiaramonte is an early stage tech angel investor and advisor. He is known for his invest... | London | Capdesk, Carmoola, Carmoola,Credit Kudos, Contingent, Credit Kudos, Dishpatch...more startups | ||
Errol Damelin Errol Damelin is an entrepreneur and investor, having founded, served as CEO, chaired, or been ... | London | Retail and Commerce, Property and Construction, Healthcare, Human Resources, Finance, Insurance...more sectors | Cazoo, CityMapper, Demyst, Elliptic, Farewill, HiBob...more startups | |
Eda Leka Angel investor with extensive experience in consumer products, B2C tech, and eCommerce scale-up... | London | CodeFirstGirls, Ensilitech, Chemastery, Kuai Commerce, Flexa, Placed...more startups | ||
Ian Ellis Ian Ellis is a seasoned business angel specialising in enterprise technology and cyber security... | London | Quantly AI, Lunar Dev, Yes-Security, Magic Orange, Valarian / formerly WorldR, HoneyDew...more startups | ||
Robert Marshall Angel investor with a strong focus on AI, cybersecurity, software, and healthtech. With a portf... | Cambridge | Cambridge Nutraceuticals, Censo Biotechnologies, Oxford Space Systems, WorkFinder, Arachnys, Audio Analytic...more startups | ||
Greg Marsh Greg Marsh, a prominent figure in entrepreneurship and venture capital, has made diverse contr... | London | Logistics, Transportation, Supply Chain, Food and Beverage, Finance, Property and Construction...more sectors | Deliveroo, flatfair, Hokodo, Onfido, Weezy, Communion...more startups | |
Michael Pennington Michael Pennington plays a significant role in the future of UK tech, with investments in a wid... | London | Breedr, Cable Tech, Carmoola, Gospel Technology, HomeTree, Koru Kids...more startups | ||
Chris Mairs Computer scientist and Fellow of the Royal Academy of Engineering. Venture Partner at Entrepren... | Wiltshire | AimBrain, Borderless, Credit Kudos, FabricNano, Hubble, Loyalty Bay...more startups | ||
Mark Ransford Angel investor specialising in fintech, with a focus on pre-seed, seed, and occasionally Series... | London | BibliU, Damisa, Fluidly, Incredible, Lendable, Privitar...more startups | ||
Zeynep Yavuz Angel investor with a focus on technology and healthcare sectors. Known for supporting early-st... | London | Ramp.Network, Yoco, stitch.money, Truelayer, two.inc, pledge.io...more startups | ||
David Stroud David Stroud extends his expertise and financial resources to various software companies, aidin... | London | Beyonk, Bodytrak, Gripable, Hello Lamp Post, Looper Insights, Pango...more startups | ||
Jeff Crusey Angel investor with a focus on investments in AI, machine learning, cyber security, and softwar... | London | Amali Systems, Castelion, True Anomaly, Danti AI, Zephr, Epsilon3...more startups | ||
Matt Clifford Matt Clifford is the Prime Minister's Adviser on AI Opportunities and co-founder of Entrepreneu... | London | Claimer, Echobox, Notpla, Permutive, Phasecraft, Stackfix...more startups | ||
Tim Sadler Tim Sadler is the Group Vice President & General Manager of Tessian Group, having co-founded an... | London | Nomio, Riff, Surfboard, Thirdfort, Tracebit, Userled | ||
Richard Grethe Angel investor with nearly 30 years of experience in the healthcare and pharmaceutical sectors,... | London | Lexverify, Focus Pharmaceuticals, Mobeus VCT, AMCo, Random42, Graphite Capital | ||
Grace Cassy Grace Cassy is the Co-Founder at CyLon and an angel investor in deep tech, with investments in ... | London | Immersive Labs, Tessian, SlashID, Utila, Treeconomy, Spexi | ||
Stephanie Peritore Stephanie Peritore is a Prime Finance & Delta 1 & ETF Origination & Strategy professional in EM... | London | Hyfe Foods, Evo Foods, Loki, Passion Capital, The Pack, Pip & Nut | ||
James Chillman Angel investor with extensive experience in cloud services, digital marketing, IT support, disa... | Manchester | Fergus, Cloud Academy, QA Limited, UK Backup, Vysiion | ||
Arvind Siva Angel investor with a strong focus on early-stage angel investments in private markets, particu... | London | Cybersecurity, Fashion technology, Artificial intelligence, Financial technology, AI, Cyber security...more sectors | Fractal, Innerworks, Hey Savi, Perplexity.AI, Numarqe | |
Pete Hutton Pete Hutton is the Chairman at Agile Analog, Cambridge GAN Devices, and Xampla. He is an experi... | UK | ArchForm, EnteroBiotix, MiAlgae, Pavegen, Trojan Energy | ||
Richard Little Angel investor and entrepreneurial non-executive director with a strong focus on B2B fintech an... | UK | CyberSmart, Concirrus, Exonar, OVO Group, Thought Machine | ||
John Hornby John Hornby is a non-executive director and charity trustee with extensive experience in both t... | London | Crowdfunder, Nutmeg, Pavegen, Vita Mojo | ||
Carl Rigby Angel investor with a focus on tech organisations, specialising in consultative sales and marke... | Bath | Optitune, Veracity, Cohesion, uGreen | ||
Mike Milner Angel investor with a focus on early-stage investments in sectors such as quantum computing, ar... | London | Aegiq, Hey Savi, Perplexity.AI, Fractal | ||
Jess McAllister Angel investor with a strong background as an early employee at Uber and Intercom, now actively... | UK | Hopin, Darktrace, Claystack, Sharechat | ||
David Cleevely David Cleevely CBE FREng, FIET is a distinguished entrepreneur and investor, holding chairmansh... | Cambridge | Axol Bioscience, Thought Machine, Privitar, WorkFinder | ||
Eva Tarasova Eva Tarasova is a VC investor open to new work opportunities, specializing in biotech, life sci... | London | Simba, edgify, wise, Kair |
Showing 1 - 30 out of 138 angel investors
