Onestream is a Hampshire-based budget provider that uses the Openreach network. Its prices are low, partly because the monthly price shown often doesn’t include a router: you can supply your own or rent or buy one from Onestream. In May 2026, Onestream also took on customers from Cuckoo.
Our simple pick: Onestream Supreme Full Fibre 220 if full fibre reaches your home and you already own a suitable router. If you need a router as well, add its cost before comparing with providers that include one.
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Onestream packages
| Package | Average download / upload speed | Monthly price from | Contract | Set-up fee |
|---|---|---|---|---|
| Fibre 40 | 38Mb / 9Mb | £18.50 | 24 months | £0 |
| Fibre 80 | 67Mb / 18Mb | £21.50 | 24 months | £0 |
| Full Fibre 80 | 62Mb / 18Mb | £19.00 | 24 months | £0 |
| Supreme Full Fibre 220 | 194Mb / 26Mb | £22.50 | 24 months | £4.95 |
Prices for new customers, last confirmed in September 2026, excluding any router charge. Faster full fibre packages up to 945Mb are available. 12-month contracts cost more each month and carry a set-up fee.
Who Onestream suits
- People who already own a good router and want the lowest monthly price over Openreach lines.
- Homes without full fibre that need a cheap part-fibre package.
- Former Cuckoo customers who want to understand their new provider.
Who should look elsewhere
- Anyone without a router who wants an all-in price. Larger providers include a router at no extra cost.
- Heavy uploaders, as Openreach upload speeds are well below download speeds.
Price rises
Onestream adds a fixed amount each year on 1 April, set out when you order. It is one of the smaller yearly rises among Openreach providers.
Routers
Part-fibre packages need a VDSL-compatible router, and full fibre needs a router with an Ethernet WAN port. Onestream offers routers to rent or buy, or you can use your own.
FAQs
Does Onestream use the Openreach network?
Yes, for both its part-fibre and full fibre packages.
Does Onestream include a router?
Not always. Check whether the deal includes one, or budget for renting or buying one.
Did Cuckoo become Onestream?
Cuckoo’s customers moved to Onestream in May 2026.
Does Onestream raise prices mid-contract?
Yes, by a fixed amount each April, set out when you order.