Funding round
CityFibre Growth
Reported as "Growth Equity"
CityFibre, which works in fibre network infrastructure deployment in London, raised $670M in a Growth round announced on 14 Jul 2025. 4 firms took part. It is CityFibre's first venture round on record.
$670M
Amount raised
500,000,000 GBP converted
Not disclosed
Post-money valuation
4
Investors
no lead named
Valuation
What this round says about the price
CityFibre did not disclose a valuation in this round. It is CityFibre's first venture round on record, 14 years after it was founded in 2011. It is 18% of the $3.79B CityFibre has raised in the venture rounds on record. CityFibre raised again 2 months later: a Growth round of $3.12B in Sep 2025.
CityFibre's funding rounds
CityFibre has 2 venture rounds on record. This one is highlighted.
- Growth this round 14 Jul 2025 $670M
- Growth 19 Sep 2025 $3.12B
Investors
Who put money in
4 firms took part; no lead investor was named.
Investors
- Infrastructure at Goldman Sachs Alternatives new investor
- backs 2 venture-backed companies new investor
- Mubadala backs 42 venture-backed companies new investor
- Interogo Holding new investor
Comparable rounds
How it compares
5 Growth rounds in Cable & Internet Providers within a year either side disclosed an amount; the median was $68M, and this round was 9.9 times the median. The closest in time, other companies' Growth rounds in Cable & Internet Providers:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Cable & Internet Providers | 18 Aug 2025 | $169M | not disclosed | Scottish National Investment Bank |
| Cable & Internet Providers | 14 Aug 2025 | $68M | not disclosed | not named |
| Cable & Internet Providers | 23 Jun 2025 | $67M | not disclosed | National Wealth Fund |
| Cable & Internet Providers | 20 Aug 2025 | undisclosed | not disclosed | not named |
| Cable & Internet Providers | 1 Dec 2025 | $50M | not disclosed | Oak Hill |
| Cable & Internet Providers | 13 May 2026 | $68M | not disclosed | Quantum Strategic Partners |
Sources
Where this comes from
Reported by 2 sources. The deal data marks this round as not yet confirmed by an official announcement. Unconfirmed
Questions
Frequently asked
How much did CityFibre raise in its Growth round?
CityFibre raised $670M in its Growth round, announced in Jul 2025.
Which investors took part in CityFibre's Growth round?
Infrastructure at Goldman Sachs Alternatives, Antin Infrastructure Partners, Mubadala and Interogo Holding.
What was CityFibre's valuation at the Growth round?
It was not disclosed.
How does it compare with other Growth rounds in Cable & Internet Providers?
5 Growth rounds in Cable & Internet Providers within a year either side disclosed an amount; the median was $68M, and this round was 9.9 times the median.
Did CityFibre raise again after this round?
Yes: a Growth round in Sep 2025 of $3.12B.