Sam Fennell
Partner @ ACF Investors
Sam Fennell is a seed investor at ACF Investors focused on Software and Apps. Sam joined the then newly-launched Angel CoFund in March 2012. Sam began her career in 1990 as an analyst with the Small Cap Equity Research Team at Kleinwort Benson. She remained with the bank until 1999 in various roles before moving to the Deutsche Bank oil team, becoming an MD of Deutsche Bank in 2004. Sam has also worked as a freelanceanalyst writing research pieces for a number of companies across a range of sectors.
- Total investments:
- 9
- Last investment:
- Lead investor:
- 44%
Last updated:
For AI agents: llms.txt
Industries Sam Fennell invests in
Stages Sam Fennell invests in
Countries Sam Fennell invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Software 3 (33%)
- Apps 2 (22%)
- Events 2 (22%)
- Scheduling 2 (22%)
- Mobile Apps 2 (22%)
Stage
- Seed 6 (67%)
- Series A 1 (11%)
- Venture - Series Unknown 1 (11%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Silveray
|
Silveray develop affordable large-area direct conversion detectors for the X-ray imaging market. | $6.6M / Series A / Jun 17, 2026 | |
Hammer Missions
|
Hammer Missions™ is an end-to-end SaaS software platform designed to help organisations make high-quality decisions using drone data & AI. Hammer helps drone professionals and Enterprise UAS programmes collect high-quality site & asset data using drones - roofs, facades, towers and more.This data can be processed & analysed into maps,3D models, 4D digital twins and asset inspection reports using Hamlet and Spector AI to detect faults, defects and anomalies, helping organisations to better manage critical sites & infrastructure and take pre-emptive actions based on insights.Having served thousands of drone service providers, engineering firms and contractors, Hammer Missions is quickly becoming to go to solution for building inspections. | $1.8M / Venture - Series Unknown / Apr 17, 2025 | |
|
Silveray
|
Silveray develop affordable large-area direct conversion detectors for the X-ray imaging market. | $5.1M / Seed / Nov 18, 2024 | |
Arrow Risk Management
|
Arrow Risk Management hopes to use the cash to expand its operations further and develop its underwriting platform. | $2.6M / Seed / Mar 20, 2024 | |
Something & Nothing
|
Something & Nothing specializes in seltzer made from natural ingredients and low in calories. | $2.8M / Seed / Nov 09, 2022 | |
|
Silveray
|
Silveray develop affordable large-area direct conversion detectors for the X-ray imaging market. | $2.4M / Seed / Oct 12, 2022 | |
Sonichem
|
Biorefinery technology to separate non-food waste lignocellulosic biomass into high-value biochemicals | $1.7M / Seed / Jun 22, 2022 | |
Howbout
|
The social planning app that combines events, group chats and calendar sharing to make organising plans simple. Automatically find dates that work, easily coordinate diaries and arrange plans with friends in seconds. | $2.5M / Seed / Jun 21, 2022 | |
Howbout
|
Howbout is the shared calendar app made for friends. Keep up with what they’re up to and find when they’re free to make plans together. | $2.4M / Seed / Jun 21, 2022 |
Co-Investors
About ACF Investors
ACF Investors is a UK based venture capital fund that co-invests alongside syndicates of sector-smart angel investors.
ACF Investors Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Paul Fauset
Partner
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Alliott Cole
Non-Executive Director
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George Mensah
Investment Manager
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George Whitehead
Partner
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Sam Fennell
Partner
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FAQ
What does Sam Fennell invest in?
Sam Fennell invests primarily in Software, Apps and Events startups, most often at Seed and Series A stage. Most of the 9 investments tracked by Shizune back companies in United Kingdom. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Sam Fennell?
Public channels for Sam Fennell include LinkedIn. 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.
When did Sam Fennell last invest?
The most recent investment recorded for Sam Fennell closed in Jun 2026. Shizune tracks 9 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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