On 28th May 2026, Cuckoo Fibre Limited transferred its broadband customer base, together with the Cuckoo brand, to Onestream Limited, following prior notification to all affected customers. Accordingly, Cuckoo has now ceased trading but will continue supporting Onestream over the coming months to respond to any customer contract, account or service-related queries that occurred or relate to the period prior to 28th May 2026.
If your services have not been transferred to Onestream, we may be able to look at your complaint. If your service has transferred to Onestream, we won't be able to look at your complaint. You can contact the Communication and Internet Services Adjudication Scheme (CISAS) who may be able to help further. Call 020 7520 3814 or email cisas@cedr.com
Please be polite to our colleagues
We understand that complaints can be emotive and consumers who contact us may be angry or upset. We will always do our best to help. We also have a duty of care and ask that users of our service are polite to our colleagues. We will not tolerate any communication we deem to contain abusive language. You can read more about this on our Working Together page.
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