Venture - Series Unknown Funded Startups in United Kingdom
Disclosed deal sizes in this “Venture - Series Unknown” slice are sharply top-heavy: Zilch raised $177M on 2025-11-16, followed by Synthesia at $200M on 20…
Disclosed deal sizes in this “Venture - Series Unknown” slice are sharply top-heavy: Zilch raised $177M on 2025-11-16, followed by Synthesia at $200M on 2025-10-29 and TMT ID at $39M on 2025-11-17, but the $177M figure dwarfs most other disclosed rounds (e.g., Cosi Care at $1M on 2025-11-20 and Cambridge Photon Technology at $1M on 2025-11-05). The distribution also shows a pronounced small-cap cluster—many disclosed rounds sit in the $3M–$8M band (e.g., Marleybones $3M on 2025-10-28; Fuuse $8M on 2025-10-13; Salence Labs is undisclosed on 2025-10-03).
Geographically, London dominates among disclosed deals (for example, Zilch, TMT ID, TRIP, Highview Power, Synthesia, Signal AI, and Leo Cancer Care all list London in 2025), while the time window for most activity is tightly recent: 48 of 50 rows fall between 2025-09-08 and 2025-11-30, with the latest close at Uniphy Ltd on 2025-11-30 ($4M) and the oldest shown closes in late October 2022 (e.g., CloudPay $50M on 2022-10-27; Fussy undisclosed on 2022-10-18). Outlier behavior is also visible in disclosure: 9 of 50 rows are “undisclosed,” including Mantis Live (2025-11-25) and Doughlicious (2025-11-07), whereas the smallest disclosed amount is $40K at Captur on 2025-09-27.
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Frequently asked
Which disclosed round is the clear outlier, and how far above the typical amounts does it sit?
Synthesia’s $200M on 2025-10-29 is the largest disclosed round in this list, and it sits well above most other disclosed entries clustered in the single-digit millions (e.g., Fuuse $8M on 2025-10-13; Nourished $670K on 2025-09-28). The next-largest disclosed entries still range far below $200M, such as Zilch at $177M on 2025-11-16.
Is there a narrow time window where most of these “Venture - Series Unknown” rounds are concentrated?
Yes. Most rows fall between 2025-09-08 and 2025-11-30, including a dense run in late September and November (e.g., EyeQuant and encompass both on 2025-09-29; Uniphy Ltd on 2025-11-30). The two oldest shown rounds are in October 2022 (CloudPay $50M on 2022-10-27 and Fussy undisclosed on 2022-10-18).
Do any cities dominate, suggesting a geographic cluster for these funded companies?
London appears repeatedly across multiple sectors with disclosed amounts and multiple close dates (e.g., Zilch on 2025-11-16 for $177M; TRIP on 2025-11-12 for $40M; Signal AI on 2025-09-25 for $164M; Leo Cancer Care on 2025-09-26 for $40M). Outside London, there are clear but smaller pockets such as Cambridge (Cambridge Photon Technology $1M on 2025-11-05; NoBACZ $6M on 2025-09-30) and Glasgow (AC Whyte $720K on 2025-11-15; Microplate Dx $640K on 2025-09-09).
How common is non-disclosure here, and does it affect comparisons like “largest disclosed” vs the rest?
Undisclosed amounts show up in 9 of 50 rows, including Mantis Live (2025-11-25) and Salience Labs (undisclosed on 2025-10-03). That means only disclosed figures support size comparisons like the largest disclosed round (Synthesia $200M on 2025-10-29) and the smallest disclosed amount (Captur $40K on 2025-09-27).
Are there sector clusters that repeat more than once, indicating thematic concentration?
Artificial Intelligence (AI) shows up across multiple entries with different disclosed sizes and dates—for example Synthesia ($200M on 2025-10-29), Sees.ai ($5M on 2025-10-09), Salience Labs (undisclosed on 2025-10-03), Captur ($100K on 2025-09-27), and Signal AI ($164M on 2025-09-25). FinTech/finance also repeats via companies like Overstone Art ($60K on 2025-11-29) and BVNK (undisclosed on 2025-10-12).
What counts as the lower tail in disclosed funding in this list, and which companies sit there?
The smallest disclosed amount is $40K at Captur on 2025-09-27, and other low disclosed rounds cluster near the sub-$1M range such as Cambridge Photon Technology at $1M on 2025-11-05 and Microplate Dx at $640K on 2025-09-09. This contrasts with the upper tail led by Synthesia at $200M (2025-10-29) and Zilch at $177M (2025-11-16).
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