Mark Horrocks
Angel Investor
London, United Kingdom
Mark Horrocks is a seed investor in London focused on iOS and SaaS. Mark Horrocks
- Total investments:
- 2
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Mark Horrocks invests in
Stages Mark Horrocks invests in
Countries Mark Horrocks invests in
Investment Focus
Industry
- iOS 1 (50%)
- SaaS 1 (50%)
- Mobile 1 (50%)
- Software 1 (50%)
- Logistics 1 (50%)
Stage
- Seed 1 (50%)
- Series A 1 (50%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Sirenum
|
Sirenum is a cloud-based platform for managing the staff lifecycle for agencies, recruiters and organisations who rely on staff for operational purposes.Sirenum is built on a highly agile technology platform, which allows us to connect with other service providers for functions not yet in the system. This trick allows us to deliver features thatthey would not otherwise have, if a client requires these features up front. Once significant demand for a particular feature becomes apparent, they may decide develop that feature in house, replacing the outside vendor and retaining additional profits.Sirenum is geared towards employers who operate complex workforces of shift workers. Sirenum is particularly suited to the Staffing, Railway, Aviation, Construction, Hospitality, Healthcare, Home care, Deliveries, Logistics and Transportation. Operators in these sectors typically have hundreds or thousands of employees. | $2.7M / Series A / Jan 29, 2021 | |
|
Sirenum
|
Sirenum is a cloud-based platform for managing the staff lifecycle for agencies, recruiters and organisations who rely on staff for operational purposes.Sirenum is built on a highly agile technology platform, which allows us to connect with other service providers for functions not yet in the system. This trick allows us to deliver features thatthey would not otherwise have, if a client requires these features up front. Once significant demand for a particular feature becomes apparent, they may decide develop that feature in house, replacing the outside vendor and retaining additional profits.Sirenum is geared towards employers who operate complex workforces of shift workers. Sirenum is particularly suited to the Staffing, Railway, Aviation, Construction, Hospitality, Healthcare, Home care, Deliveries, Logistics and Transportation. Operators in these sectors typically have hundreds or thousands of employees. | $1.3M / Seed / Oct 18, 2019 |
Co-Investors
William Currie Group
1 deal together
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FAQ
What does Mark Horrocks invest in?
Mark Horrocks invests primarily in iOS, SaaS and Mobile startups, most often at Seed and Series A stage. Most of the 2 investments tracked by Shizune back companies in United Kingdom. The Investment Focus section breaks down every industry, stage and country in the portfolio.
When did Mark Horrocks last invest?
The most recent investment recorded for Mark Horrocks closed in Jan 2021. Shizune tracks 2 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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