Funded Software Development Startups in United Kingdom
Among the 21 listed UK software development rounds (most recent 2026-06-02: Carbon Re at $26M), the largest disclosed amount is Aztec at $61M on 2025-12-07.
Among the 21 listed UK software development rounds (most recent 2026-06-02: Carbon Re at $26M), the largest disclosed amount is Aztec at $61M on 2025-12-07. That $61M figure is the only disclosed round above $50M here, and it sits well above the next-largest disclosed amounts such as Tracelight’s $4M (2025-08-07) and Workflow’s $3M (2024-11-14).
The dates also cluster into a late-2025/2026 window: four of the disclosed-dollar rounds fall between 2025-12-07 (Aztec) and 2026-06-02 (Carbon Re), while multiple companies are based in London (Carbon Re, Aztec, Tracelight, Revenue Labs, etc.), making it the dominant geography in the sample. Stage mix skews early: 14 of the 21 rows are Pre-Seed/Seed/Angel, but 5 of 21 are “undisclosed” and 6 of 21 use “Series Unknown,” limiting comparisons by disclosed size. Disclosed amounts range from Pelly at $430K (2025-01-15) up to Aztec’s $61M.
Most recent rounds
21 shownRelated listings
Frequently asked
What’s the biggest disclosed round here, and how does it compare to the rest of the UK software development list?
Aztec’s $61M on 2025-12-07 is the only disclosed round above $50M in the 21-row view; the next-largest disclosed amounts shown are far smaller, including Tracelight at $4M (2025-08-07) and Workflow at $3M (2024-11-14).
Do these rounds cluster in time, or are they evenly spread across dates?
There’s a noticeable late-2025 to mid-2026 cluster: Aztec ($61M, 2025-12-07), Carbon Re ($26M, 2026-06-02), and multiple other rounds appear between 2025-08-07 (Tracelight) and 2026-06-02. Outside that window, several Pre-Seed/Seed rounds repeat through 2023–2024, such as Fileverse at $2M (2023-10-17) and The Build Chain at $2M (2024-06-05).
Is London over-represented compared with other UK cities in this dataset?
Yes. The majority of entries list London, including Carbon Re (2026-06-02, $26M), Aztec (2025-12-07, $61M), Tracelight (2025-08-07, $4M), and many 2023–2024 rounds like Glyphic AI (2023-06-14, $5M). Non-London locations appear but as single entries in this slice, such as Pelly in Menai (2025-01-15, $430K) and The Build Chain in Doncaster (2024-06-05, $2M).
How complete are disclosed amounts here, and does that distort “largest” comparisons?
Disclosed-vs-undisclosed matters: 5 of 21 rows are “undisclosed” (e.g., Summize on 2026-03-19), and 6 of 21 are “Series Unknown” (e.g., Aztec is “Series Unknown” but still shows $61M). As a result, the $61M vs. smaller disclosed figures comparison applies only to rows with disclosed amounts.
Which stage labels dominate, and do they align with the size outliers?
Early-stage labels dominate the list: 14 of 21 rows are Pre-Seed/Seed/Angel (e.g., Tracelight Seed, Glyphic AI Pre-Seed, Mindora Angel). The main size outlier by disclosed amount is Aztec at $61M (on 2025-12-07), which is labeled “Series Unknown,” rather than being a clearly tagged Seed/Pre-Seed/Angel outlier.
What are the extremes of disclosed funding amounts, and are they tied to the same geography or stage?
The smallest disclosed amount shown is Pelly at $430K on 2025-01-15 (Menai), while the largest is Aztec at $61M on 2025-12-07 (London). These extremes therefore span both geography and stage labeling: Pelly is Pre-Seed, while Aztec is “Series Unknown.”
Know which startups just got funded. Every week.
Fresh funding rounds, new companies, and the sectors moving fastest — in your inbox every Monday morning.
Free. Sent every Monday. Unsubscribe anytime.