Funded Artificial Intelligence Startups in London
The 50 most recent AI funding rounds closed in London span roughly April through November 2025, with deal sizes ranging from $30K (Porthos, seed, August 20…
The 50 most recent AI funding rounds closed in London span roughly April through November 2025, with deal sizes ranging from $30K (Porthos, seed, August 2025) to $1.1B (Nscale, Series B, September 2025). Three rounds exceeded $100M: Nscale's $1.1B, Synthesia's $200M venture round in October, and Xelix's $160M Series B in July. The stage mix skews early — 27 of the 50 entries are seed or pre-seed, including pre-seed closes from Archestra.AI, Palabra.ai, and Kiin Bio. Six Series B rounds are also present, led by Nscale and Xelix, alongside a single Series C (Dexory, $100M, October 15). July 2025 was the highest-activity month in this slice, with 13 separate closes spanning pre-seed through Series A.
Most recent rounds
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Frequently asked
Which London AI startups raised the largest rounds in this dataset?
Nscale raised $1.1B in a Series B on September 26, 2025 — the largest disclosed round shown. Synthesia followed with a $200M venture round on October 29, and Xelix closed a $160M Series B on July 21. Dexory's $100M Series C on October 15 is the fourth largest disclosed amount in the set.
What funding stage is most common across these London AI companies?
Seed and pre-seed rounds account for 27 of the 50 entries. Pre-seed closes include Archestra.AI ($3M), Palabra.ai ($8M), AVIEL Intelligence ($340K), and Kiin Bio ($2M), while seed rounds include Anam ($9M), Cerebrium ($9M), and SpAItial ($13M). Series A and Series B each have six rounds apiece.
How recent is the deal data shown here?
All 50 rows are from 2025. The oldest round is SUBJCT's seed close on April 3; the most recent is PhysicsX's $20M Series B on November 22, covering approximately eight months of London AI deal flow.
What industries do these London AI startups operate in?
Healthcare AI includes Skin Analytics (Series B, $20M), ThinkSono (seed, $6M), and Kiin Bio (pre-seed, $2M). Financial and procurement automation is represented by Xelix (Series B, $160M) and Omnea (Series B, $50M), with physical operations AI appearing via Dexory (Series C, $100M) and Mimica Automation (Series B, $26M). Infrastructure and compute plays include Nscale ($1.1B Series B) and NexGen Cloud (Series A, $45M).
How many of these rounds have undisclosed amounts?
At least 12 of the 50 entries list no disclosed round size, including Aichitect, Glassbox, Quorso, Pangaea Data, Vertassit, LynxCraft, Agile Loop, Synthalis, Vindey, and SUBJCT. Undisclosed amounts are concentrated at seed and pre-seed stages.
Which month saw the most London AI funding activity in this dataset?
July 2025 accounts for 13 closes in the visible set — the most of any single month — ranging from Xelix's $160M Series B to multiple seed and pre-seed rounds including Pimloc ($5M), Anam ($9M), and Zango ($5M). September 2025 had five closes, anchored by Nscale's $1.1B Series B.
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