Top 5 Infrastructure Angel Investors in United Kingdom in September 2025

Last updated: Sep 2025 A list of 5 angel investors that invest in Infrastructure startups based in United kingdom. We rank investors based on the number of investments they made in Infrastructure companies from United kingdom. We update this investor list every month.

Top 5 Infrastructure Angel Investors in United Kingdom in September 2025

Investor	Infrastructure United Kingdom investments
Raghav Gupta	2
Chris Wade	1
Stuart Gardner	1
Gareth Williams	1
Lee Fixel	1

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Investor list

Entrepreneur, operator, investor and author of the bestselling One to Ten. Currently, Rags is President of Butlr.io and venture partner at Hyperplane. Prior to Butlr, Rags was COO at Humatics, GM EMEA at Ooyala, CCO at Videoplaza (sold to Telstra/Ooyala) and part of the founding management team at Brightcove (IPO).

Investment focus

Software, SaaS, Internet
Seed, Angel, Pre-Seed
United States, United Kingdom

Portfolio highlights

Squark — Go from data to insights to results, fast, with AI anyone can use.
Powerspike — Powerspike is a new type of advertising network based on content creators - where any marketer can make their brand famous in a few clicks. Our Endorsement Serving technology automatically buys, executes, and optimizes content creator endorsements - replacing the traditionally lengthy process of RFP’s, human negotiations, and insertion orders.
Fluent Forever — Discover the revolutionary app to learn any language fast and retain it forever. Ditch translation for effective tools like spaced repetition, mnemonics and interactive flashcards.

Chris Wade is a Co-Founder & Partner of Isomer Capital. Chris Wade attended the University of Leeds.

Investment focus

IaaS, SaaS, Sensor
Series B, Seed, Pre-Seed
United Kingdom, Belgium

Portfolio highlights

Cowboy — Meet Cowboy, the connected electric bike for urban riders. With an intuitive motor to sense your pedaling force and a companion app in the cockpit to guide your ride, tune into a newfound freedom in the city.
CertiVox — CertiVox solutions deliver simple, powerful information security to all things Internet (mainframes, too!), protecting business and individual privacy through the cloud and at rest. CertiVox was founded in 2009 to provide technology and services based on a simple belief: that everyone deserves the right to secure their information exchangessimply and easily. CertiVox's leading-edge encryption, key management and identity management solutions are currently in use at hundreds of the world’s leading corporations and used by individuals across the globe to protect their privacy.The companies passion is to create and share unique, cutting-edge cryptographic innovations for enterprise cloud computing and all things Internet. CertiVox are the only company in the global market today that has the technology in place to arm businesses and individuals with easy-to-use certificateless security solutions for any device and platform.Whether you are a business that wants to safeguard your company’s intellectual property, an ISV or SaaS provider that needs to embed cryptography and key management into your application, or an individual who wants to preserve the privacy of your personal data, CertiVox gives you the power to secure your information for all things Internet.CertiVox’s leading-edge solutions – including MIRACL (Multiprecision Integer and Rational Arithmetic C/C++ Library) Cryptographic SDK, on-demand encryption Key Management Service (KMS) and Identity Management Service (IDMS) – enable cloud service providers, independent software vendors (ISVs), communication providers, and smart device and semiconductor manufacturers to secure their voice and data communication solutions with ease.The PrivateSky Secure Information Exchange Service (SIX) gives individuals, businesses and their partners and customers easy-to-use tools to quickly encrypt email, files and documents without complex infrastructure or user burden. Compliance with mandatory encryption and privacy statues has never been easier.The bottom line: CertiVox's revolutionary certificateless cryptography, identity and key management solutions have taken the hassle out of Internet security, making it easy to securely exchange your information in any form, any time.
Machines With Vision — Transforming the maintenance of linear infrastructure using millimetre-accurate mapping.

Stuart Gardner

Investment focus

Financial Services, Funding Platform, Solar
Pre-Seed, Seed, Angel
United Kingdom, United States, Isle of Man

Portfolio highlights

Fundably — Fundably - Get The Right UK Business Loan | Access £1k-£2m
MONET — Embedded finance for agencies and B2B platforms. Frictionless access to white-labelling B2B credit, global payments and new revenue streams. Offer white-label invoice finance to your network, driving growth for you and your suppliers.
VIAN Therapeutics — VIAN Therapeutics is an early-stage biotechnology company focused on transforming retinal disease treatment. With a first-in-class, non-invasive eyedrop as its lead product, VIAN aims to replace invasive injections for conditions like age-related macular degeneration (AMD) and diabetic macular edema (DME). Backed by strong preclinical data andongoing clinical testing, VIAN is positioned to address significant unmet medical needs and disrupt the $15 billion retinal disease market.

Gareth Williams co-founded Skyscanner Limited in 2001 and has been its CEO through to 2018. Chairman to Jan 2020. We spent $6m of primary capital raised through to $1.8bn sale to Trip.com. Now ‘funemployed’ and learning.