Northern Gritstone
VC Fund
Leeds, United Kingdom
Northern Gritstone is an investment firm focused on investing in advanced materials, energy, health technology and cognitive computation.
- Total investments:
- 41
- Last investment:
- Lead investor:
- 66%
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Northern Gritstone invests in
Stages Northern Gritstone invests in
Countries Northern Gritstone invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Round size
- Seed
- $2.4M–$7M
- Pre-Seed
- $2.7M–$6.2M
- Series A
- $3M–$27M
Investment Focus
Industry
- Software 9 (22%)
- Artificial Intelligence 7 (17%)
- Electronics 6 (15%)
- Health Care 6 (15%)
- Medical 4 (10%)
Stage
- Seed 19 (46%)
- Series A 9 (22%)
- Pre-Seed 3 (7%)
- Series D 2 (5%)
- Venture - Series Unknown 2 (5%)
Country
- United Kingdom 30 (73%)
- Singapore 1 (2%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Duncan Johnson
Chief Executive Officer
|
Chief Executive Officer | Total investments: 33 | Find email |
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| MicroLub produces a fat replacement for lower-calorie plant-based diets. It is cutting-edge innovation to the next generation of protein technology, creating exclusive ingredient solutions that significantly minimize molecular friction. | $10M / Venture - Series Unknown / Sep 17, 2026 | ||
| Cytix develops an AI-powered application security platform that provides continuous security testing across the software development lifecycle. The platform analyzes development changes to identify potential security risks and generates focused testing plans based on the specific vulnerabilities those changes may introduce. Cytix also providesautomated security reviews and targeted micro penetration tests that validate risks in areas such as authentication, authorization, API security, business logic, and other application vulnerabilities. Its platform integrates with development and collaboration tools, including Jira, GitHub, GitLab, Azure DevOps, and Slack, to incorporate security testing into existing workflows. Cytix also offers managed security testing services that combine its automation with human penetration testing expertise. | $7M / Series A / Aug 12, 2026 | ||
| Pixel-Flo is developing a fluidic self-assembly mass transfer process that uses a slot-die mechanism and meniscus forces to continuously position microLEDs onto substrates. This backplane-agnostic technology is designed to assemble red, green, and blue LEDs in a single step for mass-market display manufacturing. | $7M / Seed / Jul 09, 2026 | ||
| Silveray develop affordable large-area direct conversion detectors for the X-ray imaging market. | $6.6M / Series A / Jun 17, 2026 | ||
| Iceotope develops liquid cooling technology for data centers, artificial intelligence infrastructure, and high-performance computing environments. The company designs precision liquid cooling systems that use dielectric fluids to manage heat generated by GPUs, CPUs, memory, storage, and power components within server infrastructure. Its platformreplaces or reduces dependence on traditional air cooling by using sealed liquid-based thermal management architectures for rack-scale and edge computing deployments. The company provides cooling solutions for AI workloads, hyperscale data centers, telecommunications infrastructure, industrial edge computing, and enterprise computing systems. Its product portfolio includes liquid-cooled server systems, rack infrastructure, thermal management platforms, and integrated cooling architectures compatible with existing data center environments.Iceotope also develops thermal management technologies focused on energy efficiency, heat reuse, and reduced water consumption in compute-intensive environments. The company collaborates with hardware manufacturers, semiconductor companies, and infrastructure providers to support the deployment of liquid-cooled computing systems for AI, analytics, and high-density computing applications. | $26M / Series B / May 14, 2026 | ||
| AmpliSi focuses on sustainable porous silicon anodes for lithium-ion batteries, with the goal of replacing graphite to increase energy density. | $2.7M / Pre-Seed / Mar 12, 2026 | ||
| Cytotrait focuses on the development of novel traits for food and agriculture. | $4M / Seed / Mar 09, 2026 | ||
| Optalysys solves the fundamental limitations of conventional computing. Optalysys develops optical AI systems that accelerate the demanding deep learning and pattern recognition tasks at groundbreaking speeds but at a fraction of the energy consumption of traditional computing hardware.Optalysys' embeddable technology will enablesupercomputing capability in Edge and mobile devices. | $30.9M / Series A / Jan 22, 2026 | ||
| IVFmicro is a Microfluidic systems for delivering fertility treatment, and optimize methods for Assisted Reproduction Technologies. | $4.7M / Pre-Seed / Dec 15, 2025 | ||
| Sitehop is a technology company that develops cutting-edge cyber-security and networking solutions. Sitehop's custom FPGA solutions are used to optimize and accelerate cloud/telco networks. | $10M / Series A / Oct 09, 2025 | ||
| See all 41 investments → | |||
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FAQ
What does Northern Gritstone invest in?
Northern Gritstone invests primarily in Software, Artificial Intelligence and Electronics startups, most often at Seed and Series A stage. Most of the 41 investments tracked by Shizune back companies in United Kingdom. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Northern Gritstone's check size?
Northern Gritstone typically joins rounds of $2.4M–$7M at Seed, $2.7M–$6.2M at Pre-Seed and $3M–$27M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Northern Gritstone participates in.
How do I contact Northern Gritstone?
Public channels for Northern Gritstone include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at Northern Gritstone?
The team at Northern Gritstone includes Duncan Johnson (Chief Executive Officer). The Team section lists each member with their title, investment count and links.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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