Latest disclosed round
Growth round (stage ambiguous, likely Series D+)
- Date
- 2025-09-24
- Amount
- USD 165m
- Sector
- AI / ML / data; SaaS / enterprise B2B
- Companies House
- 08468207
Later stage / growth
Signal AI
Media / comms / reputation intelligence SaaS; Media intelligence / NLP data platform
CandidateSeries DLondon
Evidence status
Review retained
- Identity
- Candidate
- Match
- High candidate
- Operating status
- active
- Data origins
- Core directory, Growth Network, Live Chris T D1
Capital network
7 linked investors
Funding record
4 disclosed rounds
| Date | Stage | Amount | Investors |
|---|---|---|---|
| 2025-09-24 | Growth | $165M | Battery Ventures |
| 2022-01-15 | Series D | $50M | Highland Europe, abrdn, Redline, MMC, Hearst, Guardian Media Group Ventures |
| 2018-06-27 | Series B | $16M | GMG Ventures (Guardian Media Group), MMC Ventures (largest investor in round), Frontline Ventures, Hearst Ventures, Reed Elsevier Ventures, LocalGlobe, Kreos Capital (debt) |
| 2016-12-13 | Series A | £5.8M | MMC Ventures, Hearst Ventures, Frontline Ventures, Reed Elsevier Ventures, LocalGlobe |
Traceability
Source trail
Funding and investor claims retain their public-source links. This is a research snapshot, not a live cap table.