| Blue Owl CapitalInvestors and funds | Named investor in Nscale's £320m Pre-Series C SAFE round (October 2025); Nscale: AI data centres and cloud. | | uktech.news/funding/uk-tech-funding-roundup-this | one source |
| Canyon Bridge Capital PartnersInvestors and funds | China-backed private-equity firm that bought Imagination Technologies, the Hertfordshire graphics and AI chip designer, in 2017. | | canyonbridge.com/news-and-insights/canyon-bridge · axios.com/2017/12/15/blocked-in-us-by-trump-priv | verified |
| HarbourVestInvestors and funds | Named investor in 9fin's £130m Series C round (April 2026); 9fin: AI debt-market intelligence. | | uktech.news/funding/uk-tech-funding-roundup-this | one source |
| KKRInvestors and funds | US investment firm; an early backer of Darktrace and owner of the GTR data-centre platform building in Slough. | | darktrace.com/news/darktrace-raises-series-e-at- · bisnow.com/news/london/data-center/as-the-world- · datacentrereview.com/2021/06/global-technical-re | verified |
| Sandton Capital PartnersInvestors and funds | Named investor in Nscale's £320m Pre-Series C SAFE round (October 2025); Nscale: AI data centres and cloud. | | uktech.news/funding/uk-tech-funding-roundup-this | one source |
| StepStoneInvestors and funds | Named investor in CuspAI's £334m Series B round (July 2026); CuspAI: AI materials discovery. | | uktech.news/news/uk-tech-funding-roundup-cuspai- | one source |
| Thoma BravoInvestors and funds | US private-equity firm that buys software companies; owns Darktrace, the Cambridge AI cyber-security company, since 2024. | Norfolk House, 31 St James's Square, London (postcode not read ) | thomabravo.com/press-releases/thoma-bravo-comple · data.fca.org.uk/artefacts/NSM/RNS/5372942.html | verified |
| Vista Equity PartnersInvestors and funds | US private-equity firm investing in software; lost a 2021 bidding contest for Blue Prism, the UK automation software company. | | bloomberg.com/news/articles/2021-11-16/blue-pris · thebusinessdesk.com/northwest/?p=2090328 | one source |