Investors / United Kingdom / Silicon Roundabout Ventures
Silicon Roundabout Ventures
Venture capital · London, United Kingdom · Europe
Silicon Roundabout Ventures is a pre-seed and seed venture capital fund that backs deeptech founders in Europe. It grew out of a deeptech community of engineers and founders built through meetups, dinners and demo days.
Invests inAI & Machine LearningIndustrial & Manufacturing
In its own wordsdeeptechinfrastructurecomputingdefenceenergyhardware
Your fit with Silicon Roundabout Ventures
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsSilicon Roundabout Ventures lists 19 checked portfolio companies on its own site and is named in 4 funding rounds, 1 of them as lead. Its most frequent entry is Seed, 100% of the companies with a known first round. Its largest themes are AI & Machine Learning (44%), Industrial & Manufacturing (18%) and Cybersecurity (15%). 50% of its companies are based in United Kingdom. It invests most often alongside 7percent Ventures, Deeptech Labs and Blue Wire Capital.
Counts come from funding rounds that name Silicon Roundabout Ventures, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Round figures show recent activity, not Silicon Roundabout Ventures' whole history. Rounds on record name 4 companies; its own site lists 19. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Entry stage
share of companies by the stage of its first roundShow as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 100% |
| Series A | 0% |
| Series B | 0% |
| Growth | 0% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 0 | 0 |
| '20 | 0 | 0 |
| '21 | 0 | 0 |
| '22 | 0 | 0 |
| '23 | 0 | 0 |
| '24 | 0 | 0 |
| '25 | 1 | 0 |
| '26 | 3 | 1 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 49th | 19 companies |
| Recent activity | 76th | 3 rounds in 12 months |
| Early stage | 100th | 100% of entries at pre-seed or seed |
| Evidence | 64th | 5% of companies confirmed by a round |
| Sector focus | 78th | 44% in its largest sector |
| Reach | 91th | 8 countries |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| 7percent Ventures | 3 |
| Deeptech Labs | 3 |
| Blue Wire Capital | 2 |
| Collaborative Fund | 2 |
| Creative Destruction Lab | 2 |
| Riceberg Ventures | 2 |
| 3LB Seed Capital | 1 |
| ACT Venture Partners | 1 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers1895%
- No longer answers00%
- Points to another company15%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 44% | 18% |
| Industrial & Manufacturing | 18% | 7% |
| Cybersecurity | 15% | 4% |
| Healthcare & Biotech | 12% | 15% |
| Space & Defense | 6% | 3% |
| Climate & Energy | 3% | 1% |
| Food & Agriculture | 3% | 3% |
Co-investor network
who it backs companies with, and who they back togetherAll co-investors or Compare portfolios with 7percent Ventures
Compare Silicon Roundabout Ventures head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Funds
as stated on its siteRecent portfolio activity
when companies last raised with Silicon Roundabout Ventures| Date | Company | Stage |
|---|---|---|
| 28 Apr 2026 | Seed | |
| 25 Mar 2026 | Seed Led | |
| 13 Jan 2026 | Seed |
Round details for Silicon Roundabout Ventures
Amounts, full round histories and every co-investor in Silicon Roundabout Ventures' rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
19 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Anaphite Limited develops and applies dry coating technology for battery manufacturing. | Industrial & ManufacturingClimate & Energy | Portfolio page | ||
| The company connects networks in space with networks on the ground using laser communication systems. | Space & DefenseCybersecurity | Portfolio page | ||
| Astral Systems provides irradiation services and produces medical isotopes among other things. | Healthcare & BiotechIndustrial & Manufacturing | Portfolio page | ||
| Cellbricks Therapeutics develops advanced, cell-based human tissue therapeutics to treat conditions with no solutions. | Healthcare & Biotech | Mar 2026Seed | Funding round | |
| Cnuic Technologies develops tools for lithography with virtual masks for optical applications | Industrial & ManufacturingAI & Machine Learning | Apr 2026Seed | Funding round | |
| Edge Aerospace develops the computing core that will drive humanity's future in space, including high-performance Data Processing Units (DPUs) for orbital operation. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Ephos does glass advanced packaging. | Industrial & Manufacturing | Portfolio page | ||
| Finchetto develops and manufactures network switches for data centers and hyperscalers | AI & Machine LearningCybersecurity | Portfolio page | ||
| Gama develops and provides drag sails and solar sails for space exploration | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Greenjets designs and manufactures bespoke propulsion systems for aircraft, including drones. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Haiqu develops software for quantum computing research and development teams | AI & Machine LearningCybersecurity | Jan 2026Seed | Page + round | |
| Hop Aero builds and operates rocket cargo systems for logistics in contested areas | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| The company creates restaurant experiences through hardware, software and AI. | Food & Agriculture | Portfolio page | ||
| NuQuantum develops quantum networking technology to scale quantum computers | Healthcare & BiotechIndustrial & Manufacturing | Portfolio page | ||
| The company develops autonomous systems, including drones and precision-guided weapons, for military use. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Panakeia provides comprehensive molecular analysis of patient tissues using AI-technology to provide biomarker information directly from tissue images. | Healthcare & Biotech | Portfolio page | ||
| SCI Semiconductor develops and provides memory-safe technologies and products for secure computing | CybersecuritySpace & Defense | Portfolio page | ||
AI & Machine LearningCybersecurity | Portfolio page | |||
| Swisspod is building Hyperloop infrastructure and testing solutions | Industrial & ManufacturingAI & Machine Learning | Portfolio page |
About this data
site last read 7 Nov 2026- Site
- siliconroundabout.ventures
- Last read
- 7 Nov 2026
- Watching since
- 7 Nov 2026
- Rounds since
- 1 Mar 2025
- Companies checked
- 19
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
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