Top 45 Email Startup Investors in United Kingdom (May 2026)

Portfolio highlights

• Ripjar — Ripjar is a data intelligence platform company whose mission is to provide corporates and institutions with the most advanced data and analytics solutions to protect themselves in real-time from evolving risks that threaten their growth, prosperity, and value.Founded by former members of the UK’s Government Communications Headquarters (GCHQ),Ripjar develops software products that combine automation, artificial intelligence, and data visualization to help companies solve the most complex risk and security management problems at scale.Ripjar was incorporated in 2012 and is headquartered in Cheltenham, Gloucestershire.
• SenseOn — Senseon's award-winning cybersecurity platform uses unique 'AI Triangulation' to automate threat detection and response capabilities.
• CyberSmart — Innovative cybersecurity solutions for all businesses, no matter the size. Simple, affordable government-standard security certification products for SMEs.

Portfolio highlights

• Mayku — We help people make incredible things with beautiful tabletop machines.
• Tessian — Tessian enterprise email security protects employees from themselves. DLP and spear phishing protection. Automatically detect email threats.

Portfolio highlights

• Oviva — Oviva is digitizing the treatment of type 2 diabetes and obesity through a unique behavior change platform.They have developed unique, personalised behaviour change programmes that combine smartphone app and learning portals to support dietitian-led behaviour change for conditions such as type 2 diabetes and complex obesity. Their approach allowspatients to achieve a better health outcome without having to attend clinic appointments, whilst saving health systems significant sums by preventing the development of complications related to these health conditions.Oviva was founded in 2013 and is based in London, England.
• Tessian — Tessian enterprise email security protects employees from themselves. DLP and spear phishing protection. Automatically detect email threats.
• Attractions.io — Smart technology to deliver a better guest experience, increase secondary spend and understand visitor behaviour like never before.

Portfolio highlights

• CloudNC — CloudNC CAM Assist your CAM programming co-pilot. Automate your CAM programming. From setup to CAM program in seconds for 3-axis prismatic parts.
• Credit Kudos — Credit Kudos builds products using Open Banking so credit providers can approve more people and lower risk. Explore now!
• Joint Academy — Joint Academy connects patients with licensed physical therapists to deliver online treatments for chronic joint and back pain. Our treatments are clinically proven and give patients access to a personal, licensed physical therapist, an individualized exercise plan, interactive education about the condition, and progress tracking — all through auser-friendly app. Peer-reviewed studies show that Joint Academy patients reduce their pain, change their minds about surgery, and quit painkillers. Joint Academy is now available to patients in Sweden, the US, the UK, France, and Germany.

Portfolio highlights

• CYCLE — GetHenry is a rapidly growing subscription service for market-leading delivery companies. We make sure that thousands of couriers are on the move safely, quickly and comfortably every day. In this way, we not only create added value for delivery services, but also help to reduce transport-related CO2 emissions on the last mile.
• Itana — Talent City’s mission is to build a network of charter cities that focuses on creating technology-enabled jobs within a free trade zone with its own regulation and bylaws.
• Translucent — Translucent is next-gen accounting software.

Portfolio highlights

• Captain Fresh — Captain Fresh is a freshwater fish and seafood supply chain platform. Captain Fresh is a B2B marketplace leveraging technology to deliver the fastest harvest-to-retail in the industry. The company focuses on aggregating the fragmented retail demand across the country and linking them to the small fishermen and farmers throughout the Indian coast.The company was founded in 2019 and is based in Bengaluru, India.
• Rainforest — Rainforest focuses on providing software platforms for payment processing. Rainforest is headquartered in Atlanta, United States.
• Aaritya Technologies — Because when you trade, we want you to trade like a pro.

Portfolio highlights

• Quaisr — Quaisr develops simulations for the full digital-twin lifecycle.
• Veratrak — Veratrak connects the life sciences supply chain, pairing innovation with breakthrough technologies to deliver remarkable results.
• Gable — Bridge the communication gap between data producers and data consumers

Portfolio highlights

• Scan.com — Use scan.com to find the best medical imaging centers near you Find an MRI scan, CT scan, X-ray Scan, or other diagnostic imaging scan with scan.com.
• HelloSelf — The UK's Trusted Online Private Clinical Therapy Service
• Legislate — Legislate is an easy-to-use contract management platform which provides a suite of customisable contracts for businesses and landlords.

Portfolio highlights

• RoboK — A Cambridge University spin-out building cost-effective 3D sensing software technology
• Tenzo — Tenzo is a restaurant analytics and AI forecasting platform for restaurants, pubs and cafes. Tenzo makes running restaurants easy with full data visibility.
• Riverlane — Riverlane's mission is to make quantum computing useful far sooner than previously imaginable, starting an era of human progress as significant as the industrial and digital revolutions.

Portfolio highlights

• PocDoc — Smart health in your hands
• APEXX — The APEXX payment gateway consolidates global payment providers into a single integration point, optimising the cost of complex payment ecosystems.
• measurable.energy — Machine Learning and hardware platform to eliminate wasted energy and GHG emissions in buildings

Portfolio highlights

• Incision — Support the entire OR team to learn & perform better. Build surgical skills with surgery videos and courses. Accredited by The Royal College of Surgeons.
• PathoQuest — PathoQuest provides a pioneering next generation sequencing (NGS) approach to biologics characterization and release testing
• Therapixel — Therapixel is one of the leading French software companies specializing in artificial intelligence applied to medical imaging.

Portfolio highlights

• BoomFi — All-in-one solution to send, accept and convert crypto payments. Fast multi-chain crypto and fiat settlement. Get started today.
• Eyeball Games — Eyeball Games operates as a gaming studio set up by the original creators of 8 Ball Pool, serial entrepreneurs and degens.
• Trident Digital — Trident Digital is restoring market liquidity by providing the next-generation digital asset platform that addresses issues with access, security, and capital efficiency. It allows lenders and borrowers to connect transparently and not rely on a central counterparty.

Portfolio highlights

• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com

Portfolio highlights

• Cypago — End-to-end intelligent compliance solution for any security standard including SOC 2, ISO 27001, SOX-ITGC, and HIPAA
• Swapp — Real estate developers, architects and engineers use Swapp to design buildings in a smart, flexible and efficient process.
• NVision Imaging Technologies — NVision Imaging Technologies is leveraging advances in quantum physics to enable the first routine, convenient and affordable use of Magnetic Resonance Imaging (MRI) for assessing early patient response to cancer treatment at the metabolic level.

Portfolio highlights

• Spearad — Spearad runs a multi format platform for Addressable TV advertising. Our platform helps media owners to monetize content for all available screens. Spearad changes the way advertising is sold, delivered and measured in the new era of personally-targeted and IP based TV. Our technology allows all media players in the television, OTT/VOD andAudio business to fully benefit from the advantages of digital advertising while still maintaining the specifics of audio and television. The company was founded by industry leaders ensuring maximum market acceptance and high standing technological expertise. Spearad is operating worldwide and currently has subsidiaries in Germany, UK and the US.
• Tessian — Tessian enterprise email security protects employees from themselves. DLP and spear phishing protection. Automatically detect email threats.

Portfolio highlights

• WAU BIKE — Introducing the WAU X, the long range eBike with indicators and brake lights. Featuring a 100 mile range, smart APP and remote locking system. Finance available.
• BASANIZOMAI — We are a new social network, based on humor
• Here We Flo — Shamelessly natural and sustainable period care, sensitive bladder and sexual wellness care - so you can feel crazy confident and empowered in life's messiest moments. Only natural, never harmful, always adorable. B Corp Certified.

Portfolio highlights

• Envoke — The engagement Platform for your Virtual Instrument.
• Invincibles Studio — We're an independent games studio, making exceptional football games for mobile devices that have been downloaded over 50 million times.
• Productive Machines — We create digital twins of the milling process to identify vibrations and then automatically personalize the tool path parameters to eliminate chatter. Our customers get to the best part, faster, the first time.

Portfolio highlights

• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com

Portfolio highlights

• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com

Portfolio highlights

• Raito — We make modern data teams more productive by automating data access requests while respecting privacy and security.
• FLOWX.AI — FLOWX.AI wraps and orchestrates legacy systems, making it incredibly easy for enterprises to create web and mobile front-ends for mission-critical business flows. The revolutionary AI-enabled Apeiron UX engine is able to automatically create a modern, intuitive front-end for customers and employees, helping to consolidate in a unified UI all thebusiness logic cross-systems.This enables companies with complex technology landscapes to create and launch mission-critical digital products fast, and then facilitate an easy path forward to full digital transformation.The revolutionary novel approach is 100x faster and cheaper than existing alternatives. FLOWX.AI allows delivery of enterprise-grade mobile and web digital front-ends as fast as 10 weeks, and requires much smaller engineering teams.
• AccessFintech — AccessFintech offers a network of participants sharing data, standardising workflows and collaboration exception resolution

Portfolio highlights

• TipLink — TipLink helps send crypto with a link. Someone with crypto can create a account and send that link to anyone over any platform. It’s like buying a gift card, connect the client's crypto wallet of choice and create a account by depositing how much they want to send.
• Afterparty — Your favorite creators are here! Get 1 on 1 unfiltered experiences with creators through Afterparty livestreams or chat 24/7 through AI powered conversations
• Collectibles.com — Collectibles.com is a Web3 community and marketplace for collectors and the worldwide collectibles sector.

Portfolio highlights

• Cortical Labs — Cortical Labs are creators of the dishbrain that fuses living brain cells onto computing devices to create machines with biological intelligence
• Stoke Space — STOKE Space Technologies seamlessly connecting earth and space.
• High Earth Orbit Robotics — HEO Robotics provides on-orbit inspection services for satellites, using a network of space-based sensors. The high quality image data and insights allow satellite operators to conduct predictive maintenance and diagnose issues with their assets

Portfolio highlights

• Zight (formerly CloudApp) — Record and share your screen effortlessly with Zight's screen recorder. Record your screen with or without a camera overlay and so much more.
• SparkToro — Our mission is to make it easy to discover the websites, blogs, podcasts, social accounts, and publications that reach your audience.
• 1 Second Everyday — A modern day visual diary on iOS and Android.

Portfolio highlights

• OxCan — Enabling curative cancer treatment through early detection
• Machine Discovery — Machine Discovery is a University of Oxford spin-out commercializing new machine learning technology. We leverage proprietary neural network technology to accelerate expensive calculations — and we do it with minimal data and 99.9% fidelity.
• MitoRx Therapeutics — Developing revolutionary mitochondrial-protective therapeutics which reverse mitochondrial dysfunction to arrest decline in muscular dystrophy and neurodegeneration. MitoRx Therapeutics' first-in-class first-in-target platform has potential to arrest the progression of some of the most challenging diseases.

Portfolio highlights

• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com

Portfolio highlights

• OpenWeb — It's time to save online conversations
• Appsumer — Grow app advertising revenue with cross-channel optimization. Get actionable insights from our UA-focused platform.
• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com

Portfolio highlights

• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com

Portfolio highlights

• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com

Portfolio highlights

• CodeWP — CodeWP is a WordPress code generator that uses AI and specialized models for WordPress, Woo and others to help you build better & quicker.
• Featured — Featured connects subject-matter experts with top publishers to increase their exposure and create quality, ready-to-publish Q&A content.
• Economize — Economize is a cloud cost optimization software that helps engineering teams analyze, manage and optimize their GCP/AWS cloud infrastructure spend.

Portfolio highlights

• Caliza — Give your users access to the digital dollar economy. Get early access!
• Flyway — Owning a pied-à-terre in a city you regularly visit is unnecessarily difficult. You end up wasting money on rentals and hotels, since buying a whole property is simply not affordable. We created Flyway to change that.You can now co-own a second home, in your favorite city, at a fraction of the price.A share of 1/12 gives you up to 30 daysof stay annually in your city home. Want more? You can buy more shares! You own the asset, not a block of time. Flyway deals with all the hassle of ownership, so that you simply land and enjoy your city getaway.HOW WE DO IT BEHIND THE SCENESWe identify top-notch properties, in top locations that we can supercharge with smart features. We then set up an LTD (Limited Liability Company) that acquires the property. That LTD is split into 12 equal shares, and each share costs 1/12 of the total house price. A buyer can buy up to half of the property (6 shares). WHAT YOU GETYou get ownership of a second home suited to your budget and needs. Whether you use it for leisure, work or you simply believe in the property’s potential as an investment, you have the rights to the asset. You can use and resell your share when you want. Meanwhile, you get to enjoy upscale, smart living in very prime properties, downtown, without any of the headaches of maintenance, cleaning and bill handling. Flyway acts as the Property Manager, taking all the hassle of ownership away from you, so that you simply land and enjoy your home.
• Muni Tienda — Muni Tienda is the first community group buying platform in Latin America, the system aims to provide convenience and savings to the region's middle class households.

Portfolio highlights

• Tarvos — Tarvos is an automated insect monitoring platform with real-time insights from smart traps.
• GrowinCo. — GrowinCo., is the lead sourcing platform for the CPG industry, connecting suppliers, co-packers, co-manufacturers, and business partners.
• MeuChapa — MeuChapa is a logtech digital platform that provides workforce solutions for logistics and supply chains.

Portfolio highlights

• Cargofy — Cargofy it's a mobile assistant, kind of a "Siri" but for truck drivers. We help truckers access to high paying loads through our app, and receive discounts on fuel, maintenance, and truck parts.
• seedata.io — Using deception technology, our platform enables customers to deploy decoys quickly, automatically rotate them, and detect potential attackers early, reducing the chances of a security incident going unnoticed.
• 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.

Portfolio highlights

• Automata — Automata is a deep-tech company that creates products that empower people to automate physical work. The company's product, Eva, is a lightweight and affordable robot arm built for professionals in a production line, in a lab, a home workshop or even in a classroom. People don't need to be technical experts to communicate with robots. Theweb-based software platform can be programmed by anyone, anywhere, any time, from any device, making it easy to reconfigure for a wide range of different tasks.Automata was founded on 2015 and is headquartered in London, England.
• Entrepreneur First — We are the best place for the world's most ambitious talent to come together and build game-changing technology startups from scratch.
• Hepster — hepster, die Onlineversicherung, flexibel, sicher und immer 100% digital.

Portfolio highlights

• JOKR — Grocery shopping is easier now with JOKR, your instant delivery app. Order your groceries and favorite products in our online supermarket and get them instantly at your door. Download the app now and make your first grocery order on us. Available in IOs and Android. Access www.jokr.com for more info
• Writer — Accelerate growth across every team with the most secure AI platform. We customize generative AI to your workflows, not the other way around.
• Anytype — for those who celebrate trust & autonomy.

Portfolio highlights

• Unitu —
• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com
• Driftrock — Boost lead volume, increase lead quality and conversion rates.

Portfolio highlights

• Auddy — The Problem: Millions of series. Endless producers. Advertising £s to be located. An audience to build. Many platforms. How does a creator navigate this fragmented but large ecosystem? Creators do not have the resources to bring business and analytical skills to their podcast. Or the ability to properly market or develop an audience.Auddy solvesthe creator’s problem through the combination of editorial input, data insights and analytics, marketing and promotional services and sales. In so doing, it also rewards the creator by paying a significant royalty rate.
• Paragraf — We Work to Develop Innovative and Useful End Products from Novel Materials. Our Analogue Sensors Are Designed to Provide Accurate Field Gradient Mapping & Alignment.
• SteadyPay — SteadyPay exists to improve the financial wellness of all gig economy workers. Our service enables gig economy workers to enjoy consistent income even when they work inconsistent hours (due to such factors as reduced shifts, fewer bookings, time of sick and holidays). Using the SteadyPay mobile app, customers securely link to their bank, we thenwork out the customer's average income and monitor for when income drops below that average. When this happens we provide a top-up, advancing money to the customer's bank to bring their income back up to average. No interest is charged on the top-up; we are a subscription credit service. By smoothing out income we enable gig economy workers to budget with confidence for everyday essentials, and in turn reduce the need to turn to high-cost credit solutions that trigger debt spirals.

Portfolio highlights

• Diffblue — Diffblue Generative AI for Code helps you shift left by autonomously writing full suites of Java unit regression tests so you can catch errors faster and earlier in your pipeline
• Ramp Growth — How many users will your mobile game acquire, and how much more will they pour into your virtual economy? Try Ramp to find out.
• Peppy — Peppy is the digital health health app that supports menopause, fertility, men's health, women's health and more with real health experts.

Portfolio highlights

• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com

Portfolio highlights

• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com

Portfolio highlights

• Zzish — Zzish are EdTech's most passionate pioneers; on a mission to transform the use of apps in the classroom through a data driven technology platform that solves key pain points for developers and teachers. Their platform helps developers create, distribute and monetise and helps teachers discover, use and buy, curriculum mapped education appsthat have a real impact on student learning. At the heart of their platform are their real-time teacher dashboards, a "virtual teaching assistant" that gives teachers instant insight into student strengths and weaknesses using any app.More than 500,000 teachers (70% in the USA) from over 170 different countries have signed up to use Zzish already. With their first paying schools in the UK, US, Holland and Israel and Ministries of Education around the world starting to recommend their products, Zzish is now scaling up to become a global technology leader providing the key data and intelligence layer underpinning the new generation of education applications.Zzish has won numerous awards over the last few years. EdSurge ranked Quizalize as the "No.1 new app for schools" in 2015 and Zzish was selected as one of the "Future 30" at the Bett Show (Europe's leading EdTech trade show) and one of the "EdTech 20" at EdTechXEurope (Europe's leading EdTech investor summit). Moreover the Zzish Teacher Dashboards was the runner up for Teach Secondary's "Technology Innovation of the Year" and a finalist for selection in the Education Resource Awards.
• Swytch — Work mobile numbers on personal phones. Swytch offers businesses the ability to provide work mobile numbers on their team’s personal phone. Everyone can now use multiple mobile numbers from one device. Visit our website: www.swytch.com
• Mainframe — Mainframe — A decentralized network for censorship-resistant message routing.The need for a privacy and security focused communications ecosystem has never been higher. Distrust and centralized powers abound, with third parties monopolizing users’ information and governments imposing surveillance tactics on citizens inside and outside theirborders. Each takes advantage of the same decades-old architecture on which the entire Internet is built. The Mainframe network is the messaging layer for the new web. This goes beyond human-to-human messaging. There are many use-cases and applications for reliably, privately, and securely routing data packets through the Mainframe peer-to-peer network. Mainframe is resistant to censorship, surveillance, and disruption. With the exception of a catastrophic asteroid event or an aggressive alien invasion, the Mainframe network is simply unstoppable. We build with five fundamental principles as our guide.

Portfolio highlights

• Tomorrow.io — Predict, automate, and solve your biggest weather challenges with Tomorrow.io.
• Auriga Space — Next-generation space launch company providing frequent, sustainable and affordable transport to low Earth orbit
• ATMOS Space Cargo — ATMOS Space Cargo develops and manufactures space capsules to return cargo from space, microgravity experiments, Commercial products to entire rocket stages.

Portfolio highlights

• Drag — Turn Gmail into a Team Workspace. Use DragApp to manage workflows such as Help Desk, CRM or Tasks. #1 Gmail Shared Inbox tool.
• Propel(X) — Propel(x) is where investors discover, evaluate and invest in technology startups and venture capital funds.
• Advanced Silicon Group — Advanced Silicon Group operates a nanotechnology company dedicated to commercializing silicon nanotechnology. The company was founded in 2015 with the goal of commercializing silicon nanotechnology developed by ASG employees.

Portfolio highlights

• Vise — Vise automates investment management for financial advisors using artificial intelligence. Vise has built a full-stack platform spanning the entire lifecycle of the advisor-client relationship, including designing personalized portfolios for clients, managing portfolios, and providing on-going intelligence. By doing so, Vise helps financialadvisors focus on their most valuable resource -- their client relationships.Vise was founded in 2016 by Samir Vasavada and Runik Mehrotra in New York, New York.
• Yummy — Superapp of Venezuela & Quick Commerce for LATAM
• Jeeves — Pay for anything, anywhere, in your local currency. No fees. No interest. No personal guarantees. Mobile-first, built with your team in mind.

Portfolio highlights

• Metrobi — Grow your business with a reliable local delivery service. Metrobi is more than a courier service. Transparent pricing, delivery tracking and route optimization
• FanFest — For all the sports teams / film studios / record labels with empty stadiums / theaters / concerts, we built FanFest, a "Twitch-in-a-box" platform with built-in merchandising and sponsorship for ticketed live events delivered virtually. Reach out for more info on how we're saving the $2.3T global entertainmentindustry here.
• Another Lane — Another Lane provides an end-to-end solution for the sale of new and used sneakers by catering to a community of collectors who curate the top collections for buyers.

Portfolio highlights

• YourGrocer — YourGrocer provides online grocery delivery from local independent shops in Melbourne
• CM Commerce — Increase sales and revenue with ecommerce email marketing. Do it all while saving time with premade workflows that can be ready in minutes.
• Bloom Impact Investing — Bloom Impact Investing provides an investment platform to investors wanting to make a difference to the environment. Join us to access clean energy and cleantech investment portfolios that your future self will thank you for.