Cuckoo launched as an ISP in 2020. Customer base sold to Onestream in May 2026 (Source).
United Kingdom
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Organization: Any kind of organization. The Organization class represents a kind of Agent corresponding to social instititutions such as companies, societies etc.
About
Cuckoo launched as an ISP in 2020. Customer base sold to Onestream in May 2026 (Source). (Source). It was acquired by Giganet (Fern Group) in 2022. Acquisition completed in 2023. Fern Group consolidates Jurassic Fibre and Swish Fibre and Giganet and AllPoints Fibre to Cuckoo in early 2024 (Source). Giganet acquired Cuckoo and split out its operations to Giganet for business and Cuckoo for residential.
Operator Characteristics
Retail-only ISP?
Yes
(2020-01-01 – 2026-05-01)
Business-only ISP?
No
(2020-01-01 – 2026-05-01)
Altnet?
Yes
(2020-01-01 – 2026-05-01)
Alternative ISP (acquired by Giganet, customer base sold to Onestream May 2026)
Cuckoo sold broadband over the whole Openreach copper network until customer base sold to Onestream in May 2026 where available; Openreach lists the provider among fibre broadband service providers (Source), (Source).
Cuckoo sold broadband over the whole Openreach part-fibre network until customer base sold to Onestream in May 2026 where available; Openreach lists the provider among fibre broadband service providers (Source), (Source).
Cuckoo sold broadband over the whole Openreach full-fibre network until customer base sold to Onestream in May 2026 where available; Openreach lists the provider among fibre broadband service providers (Source), (Source).