# CyLon Ventures

CyLon Ventures is a Venture Capital based in Witney, United Kingdom.

## Overview

- **Organization type:** Venture Capital
- **Headquarters:** Witney, United Kingdom
- **Region:** Europe
- **Address:** Witney, United Kingdom
- **Founded:** 2015
- **Assets under management:** Undisclosed
- **Website:** www.cylonventures.com
- **LinkedIn:** https://www.linkedin.com/company/cylon-lab

## Regulatory record

- **Reports private funds:** No

## About

CyLon Ventures are Europe's leading specialist early stage investors in security and resilience. They are not a VC fund; they invest using their own capital to stay founder aligned, with angel-sized cheques. Their team combines national security experience with nearly a decade working with founders of enterprise security startups, and they focus on helping portfolio companies reach early customers, meet investors, and build strategic relationships.

## Sectors

- security and resilience

## People

- Grace Cassy — Investing (co-founder)
- Jonathan Luff — Investing (co-founder)
- Alex van Someren — co-founder

## Questions

### Who runs investment decisions at CyLon Ventures?

No named principals or investment committee members appear in public records.

### Does CyLon Ventures participate in fund commitments or only direct deals?

Available data does not specify fund commitments versus direct investments.

### What investment stages does CyLon Ventures typically target?

The firm lists coverage of early-stage start-ups.

## Related profiles

- [Cygnus Investment Partners](https://altss.com/profile/cygnus-investment-partners)
- [Cyndeo Wealth Partners](https://altss.com/profile/cyndeo-wealth-partners)

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Last updated: 2026-08-11T15:06:35.052Z

Canonical page: https://altss.com/profile/cylon-ventures

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