17 defense tech investors in the UK
We list 17 defense tech investors in the UK as of November 2026: 1 has an SEC filing on file and 16 were checked on the firm's own website or an official register, and the list was last checked on 5 Nov 2026. The cities with the most head offices on this list are London (10), Harwell (1) and Bath (1).
Top 7 defense tech investors in the UK, ranked by recent fund activity
Among firms with a published profile and a dated fund or deal in the last 24 months. The rule: Activity score out of 100: recency of the latest fund filing or dated deal (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stated focus on the UK (15: full marks when the firm names the UK as where it invests, half when it says Europe or global), size of the fund on file on a log scale (15) and completeness of the public record (10). Regional focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns. The same rule orders the whole list; it is repeated in the method box.
Seraphim Space
Type: VC firm · HQ: London, United Kingdom · Stages: Seed, Series A, Growth · Focus: Defense Tech, Space, Mobility, Deep Tech · Latest activity: New fund, Oct 2026 · Fund size or assets: $1.0B (own site)
Latest fund filing dated Oct 2026; $1.0B on file (own site); states defense tech as a focus; names the UK as where it invests; 8 named decision-makers on file.
Notion Capital
Type: VC firm · HQ: London, United Kingdom · Stages: Seed, Series A · Focus: Defense Tech, SaaS, B2B, AI · Latest activity: New deal, Oct 2026 · Fund size or assets: $2.0B (own site)
Dated new deal in Oct 2026; $2.0B on file (own site); states defense tech as a focus; 8 named decision-makers on file.
Entrée Capital
Type: VC firm · HQ: London, United Kingdom · Stages: Pre-seed, Seed, Series A, Series B, Growth · Focus: Defense Tech, AI, Fintech, Deep Tech · Latest activity: New deal, Feb 2026 · Fund size or assets: $1.5B (own site)
Dated new deal in Feb 2026; $1.5B on file (own site); states defense tech as a focus; names the UK as where it invests; 6 named decision-makers on file.
UKI2S
Type: VC firm · HQ: London, United Kingdom · Stages: Pre-seed, Seed · Focus: Defense Tech, Biotech, Healthtech, AI · Latest activity: New deal, Jul 2025 · Fund size or assets: £150M (own site)
Dated new deal in Jul 2025; £150M on file (own site); states defense tech as a focus; names the UK as where it invests; 8 named decision-makers on file.
Twin Track
Type: VC firm · HQ: London, United Kingdom · Stages: Pre-seed, Seed · Focus: Defense Tech, AI, Cybersecurity, Media · Latest activity: New fund, Apr 2026
Latest fund filing dated Apr 2026; states defense tech as a focus; names the UK as where it invests; 2 named decision-makers on file.
SuperSeed
Type: VC firm · HQ: London, United Kingdom · Stages: Pre-seed, Seed · Focus: Defense Tech, AI, Proptech, Energy · Latest activity: New deal, Apr 2026
Dated new deal in Apr 2026; states defense tech as a focus; names the UK as where it invests; 8 named decision-makers on file.
7percent Ventures
Type: VC firm · HQ: London, United Kingdom · Stages: Pre-seed, Seed · Focus: Defense Tech, AI, Space, Healthtech · Latest activity: Portfolio news, Jan 2025
Portfolio news dated Jan 2025; states defense tech as a focus; names the UK as where it invests; 5 named decision-makers on file.
First 10 of 17 defense tech investors in the UK
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| Seraphim Space | VC firm | London, United Kingdom | Seed, Series A, Growth | Defense Tech, Space, Mobility, Deep Tech | New fund, Oct 2026 | $1.0B (own site) | 4 Nov 2026 | 8 names · Unlock |
| Notion Capital | VC firm | London, United Kingdom | Seed, Series A | Defense Tech, SaaS, B2B, AI | New deal, Oct 2026 | $2.0B (own site) | 4 Nov 2026 | 8 names · Unlock |
| Entrée Capital | VC firm | London, United Kingdom | Pre-seed, Seed, Series A, Series B, Growth | Defense Tech, AI, Fintech, Deep Tech | New deal, Feb 2026 | $1.5B (own site) | 4 Nov 2026 | 6 names · Unlock |
| UKI2S | VC firm | London, United Kingdom | Pre-seed, Seed | Defense Tech, Biotech, Healthtech, AI | New deal, Jul 2025 | £150M (own site) | 4 Nov 2026 | 8 names · Unlock |
| Twin Track | VC firm | London, United Kingdom | Pre-seed, Seed | Defense Tech, AI, Cybersecurity, Media | New fund, Apr 2026 | 4 Nov 2026 | 2 names · Unlock | |
| SuperSeed | VC firm | London, United Kingdom | Pre-seed, Seed | Defense Tech, AI, Proptech, Energy | New deal, Apr 2026 | 4 Nov 2026 | 8 names, firm email · Unlock | |
| Growth Lending | Venture debt | London, United Kingdom | Growth | Defense Tech, Fintech, Healthtech, B2B | £1.0B (own site) | 4 Nov 2026 | 6 names · Unlock | |
| 7percent Ventures | VC firm | London, United Kingdom | Pre-seed, Seed | Defense Tech, AI, Space, Healthtech | Portfolio news, Jan 2025 | 4 Nov 2026 | 5 names · Unlock | |
| Longwall Ventures | VC firm | Harwell, United Kingdom | Pre-seed, Seed | Defense Tech, Healthtech, Biotech, Industrial Tech | 4 Nov 2026 | 3 names, firm email · Unlock | ||
| SETsquared | Accelerator | Bath, United Kingdom | Pre-seed, Seed, Series A | Defense Tech, Industrial Tech, Deep Tech, AI | 4 Nov 2026 | 7 names, firm email · Unlock |
You are seeing 10 of 17. The full list adds 7 more investors and 99 named decision-makers.
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How these 17 break down
By city
| City | On this list | Share |
|---|---|---|
| London | 10 | 59% |
| Harwell | 1 | 6% |
| Bath | 1 | 6% |
By stage
| Stage | On this list | Share |
|---|---|---|
| Pre-Seed | 10 | 59% |
| Seed | 14 | 82% |
| Series A | 8 | 47% |
| Series B | 3 | 18% |
| Growth | 6 | 35% |
Stage is our research. A firm can back more than one stage.
By type
| Type | On this list | Share |
|---|---|---|
| VC firm | 13 | 76% |
| Venture debt | 1 | 6% |
| Accelerator | 1 | 6% |
| Government or university fund | 1 | 6% |
| Corporate VC | 1 | 6% |
Method and limits
- Source
- 1 of the 17 rows carries an SEC filing (Form D or Form ADV). All 17 have a website we checked. Filing date and fund size are SEC data where a filing exists. Stage, sector and check size are our research.
- Inclusion rule
- Organizations that back startups. Individuals, buyout funds and firms we found to be inactive are left out. Sector: the firm states defense tech as a focus on its own site, or we observed it in the firm's portfolio.
- Order
- Firms with a published profile come first. Activity score out of 100: recency of the latest fund filing or dated deal (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stated focus on the UK (15: full marks when the firm names the UK as where it invests, half when it says Europe or global), size of the fund on file on a log scale (15) and completeness of the public record (10). Regional focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Last refreshed
- November 2026. Rows on this list were checked between 4 Nov 2026 and 5 Nov 2026.
- Fill rates
- Of 17 rows: stage 17, sector 17, fund size 7, website 17. In the paid file: named decision-makers on 17 rows, firm email on 6, LinkedIn page on 13, check size on 7.
- Corrections
- Email [email protected] or use the update form. We act within 5 working days.
Questions
How many defense tech investors in the UK are there?
We list 17 as of November 2026. 5 of the 17 have a fund filing or a dated deal in the last 12 months. The cities with the most are London (10), Harwell (1) and Bath (1).
Which defense tech investors in the UK raised a new fund in the last 12 months?
1 of the 17 has a fund filing dated in the last 12 months: Twin Track (Apr 2026). 5 of the 17 have a fund filing or a dated deal in that time.
What is the typical fund size of defense tech investors in the UK?
None of the 17 discloses a fund size on an SEC Form D, so there is no median to give. 7 rows carry a size or assets figure from another public source, for example Seraphim Space at $1.0B (own site) and Notion Capital at $2.0B (own site).
Which stage do most defense tech investors in the UK back?
Of the 17 with a stage on file, seed (14), pre-seed (10) and Series A (8). A firm can back more than one stage.
Where does the data on defense tech investors in the UK come from and how often is it updated?
1 of the 17 rows has an SEC filing on file (Form D or Form ADV) and 16 were checked on the firm's own website or an official register. Filing date and fund size come from the filing. Stage, sector and check size are our research. Rows on this list were last checked on 5 Nov 2026 at the latest. The whole file is re-verified twice a year.
Can I download the list of defense tech investors in the UK as a spreadsheet?
Yes. The file holds all 17 rows in Excel and CSV, with 99 named decision-makers and 6 firm emails, for $49 one-time. 10 rows are free on this page.
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