Portfolio Ventures
VC Fund
London, United Kingdom
Portfolio Ventures is a VC fund in London focused on Software and Artificial Intelligence. Portfolio Ventures was founded in October 2014 by Will Martin and Will Brooks. They have been involved in raising funding for over 120 early stage companies. They set up Portfolio Ventures to work with high-quality UK startups that have already achieved early traction, are ready to scale and will benefit from access to their network of sophisticated private and professional investors.
- Total investments:
- 91
- Last investment:
- Lead investor:
- 0%
- Fund size:
- $6.1M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Portfolio Ventures invests in
Stages Portfolio Ventures invests in
Countries Portfolio Ventures invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Round size
- Seed
- $1.9M–$10M
- Pre-Seed
- $1.4M–$3.7M
- Series A
- $7M–$12M
Investment Focus
Industry
- Software 25 (27%)
- Artificial Intelligence 21 (23%)
- SaaS 16 (18%)
- Financial Services 13 (14%)
- Information Technology 9 (10%)
Stage
- Seed 40 (44%)
- Pre-Seed 14 (15%)
- Series A 7 (8%)
- Funding Round 4 (4%)
- Venture - Series Unknown 4 (4%)
Country
- United Kingdom 57 (63%)
- Japan 1 (1%)
- France 1 (1%)
- Ireland 1 (1%)
- Isle of Man 1 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
William Martin
Founder and Director
|
Founder and Director | Total investments: 107 | Find email | |
William Brooks
Founder & Director
|
Founder & Director | Total investments: 72 | Find email |
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Immix engages in scaling web3 trading through next-generation technologies. | $3.5M / Seed / Oct 08, 2026 | ||
| Nettle's AI synthesizes data from both internal and external sources, adding useful insights to underwriter-led desktop risk evaluations. | $4.8M / Seed / Oct 06, 2026 | ||
| Cleavr is the first AI partner that automatically takes your money. which is linked to your ERP, takes care of everything on its own | $9M / Seed / Oct 06, 2026 | ||
| Procurement within the construction industry is traditional, analogue and ripe for disruption. We’re on a mission to help construction companies reduce costs and save time through our new AI procurement tool, Prolo.Our service leverages cutting-edge AI, including Large Language Models (LLMs), Natural Language Processing (NLP), and voicetranscription, to bypass outdated practices in the construction industry. This technology enhances decision-making, increases efficiency, and delivers a superior user experience. | $5.6M / Seed / Jul 14, 2026 | ||
| Paypercut is a fintech startup that allows small and mid-scaled merchants to offer Buy Now, Pay Later at checkout via a single integration. | $5.8M / Seed / Jun 03, 2026 | ||
| Infrawatch is a London-based cybersecurity startup that helps track and analyze internet infrastructure to uncover phishing, fraud, and other cyber threats. | $3M / Pre-Seed / May 20, 2026 | ||
| Seapoint is a fintech company that offers a business account that automates payroll, expenses, invoice payment, reporting. | $8.8M / Seed / Apr 21, 2026 | ||
| Overmind is a development tool that allows AI to learn from production data. Using pattern of life analysis, it transforms real-world agent behavior into continuous improvement, allowing teams to ship secure and highly specialised agents. | $2.7M / Seed / Feb 11, 2026 | ||
| Eolas Medical provides a knowledge management solution that allows hospitals to have a source of medical knowledge for the clients. It is a clinician-led start-up that harnessing the world's medical knowledge for equitable healthcare. Eolas Medical was founded in 2019 and is based in Belfast, Northern Ireland. | $12.1M / Series A / Jan 20, 2026 | ||
| Conveyd provides a digital conveyancing platform that supports residential property transactions by combining online workflows with regulated legal services. The platform enables users to manage buying, selling, and remortgaging processes through a single interface that handles case initiation, identity checks, document management, andcommunication with legal professionals. Conveyd uses automation and data-driven checks to streamline tasks such as onboarding, compliance verification, and progress updates, helping reduce manual steps in traditional conveyancing. Its services include online quotes, digital case tracking, and structured updates that allow customers, brokers, and partners to monitor transaction stages in real time. The company works with qualified conveyancing solicitors to prepare, review, and complete legal documentation required for property transfers. Conveyd’s offering is designed to integrate legal execution with technology-enabled transparency across the conveyancing process. | $3.3M / Seed / Dec 12, 2025 | ||
| See all 91 investments → | |||
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FAQ
What does Portfolio Ventures invest in?
Portfolio Ventures invests primarily in Software, Artificial Intelligence and SaaS startups, most often at Seed and Pre-Seed stage. Most of the 91 investments tracked by Shizune back companies in United Kingdom. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does Portfolio Ventures invest in?
Portfolio Ventures typically joins rounds of $1.9M–$10M at Seed, $1.4M–$3.7M at Pre-Seed and $7M–$12M at Series A. These are whole funding-round sizes, not Portfolio Ventures's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds Portfolio Ventures took part in.
How do I contact Portfolio Ventures?
Public channels for Portfolio Ventures 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 Portfolio Ventures?
The team at Portfolio Ventures includes William Martin (Founder and Director) and William Brooks (Founder & Director). 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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