Published: June 2026 | Reviewed by the FibreCompare editorial team
This isn't a normal broadband comparison — and that's exactly why it's worth reading. Sky sells broadband the traditional way: a fibre line into your home, an engineer if needed, speeds guaranteed by physical infrastructure. Three sells broadband with no line at all: a router arrives in the post the next working day, you plug it in, and your home runs on the same 5G network as your phone. No landline, no engineer, no drilling — and at £14 a month, a headline price that undercuts every fixed-line deal from every major provider in the country.
The question is what you give up for that price, and whether it matters for your household. We've compared cost, speed, reliability, setup, service, TV, and hardware — with every price taken from the live deals tables on FibreCompare.
| Three | Sky | |
|---|---|---|
| Technology | 4G/5G fixed wireless — no fixed line | Full fibre via Openreach and CityFibre |
| Headline deal | 5G Home Broadband — 150Mbps avg, £14/month | Full Fibre 150 — £23 (Openreach) / £22 + £80 gift card (CityFibre) |
| Other plans | 4G Home Broadband — £14; 5G Outdoor (Outdoor Hub + eero 6 WiFi) — £14 | Tiers up to 900Mbps (Openreach) and 5Gbps (CityFibre) |
| Data | Unlimited on all plans | Unlimited |
| In-contract rises | £3.50/year, stated per deal: £17.50 from April 2027, £21 from April 2028 | Prices may change during the 24-month minimum term |
| Contract | 24 months; 1-month flexible contracts available on 5G | 24 months |
| Setup | None — next working day delivery (order by 8pm), plug and play | £0 setup; engineer install where needed |
| Speed certainty | Signal-dependent — varies by location and congestion | Line-delivered — consistent at the tier you buy |
| TV | None | Sky Stream / Sky Glass — the UK's leading platform |
All prices from the live deals tables on our Three and Sky pages. Sky CityFibre pricing is from a live CityFibre-area address check and may vary by location.
Winner: Three — by the widest margin in any comparison we publish
There's no contest to narrate here, only context to add. Three's 5G Home Broadband delivers a 150Mbps average for £14 a month with unlimited data and zero setup cost. Sky's like-for-like Full Fibre 150 is £23 on Openreach or £22 in CityFibre areas. Across a 24-month term — including Three's stated rises to £17.50 from April 2027 and £21 from April 2028 — Three totals roughly £392, an effective £16.33 a month. Sky's Full Fibre 150 runs £552 on Openreach, or about £448 net of the gift card on CityFibre. Three is around £150–£160 cheaper over the contract than Sky's best equivalent, and nearly 30% cheaper than its standard one.
Two honest qualifications. First, the trajectory: £14 rising to £21 is a 50% increase across the term — the steepest proportional escalator of any provider we cover, even though the pound amounts (£3.50 a year) are modest. The £14 headline is a year-one price; budget on the average, not the door price. Second, what the money buys is different in kind, not just degree — which brings us to speed.
Winner: Sky — this is what the price gap pays for
Three's 150Mbps and Sky's Full Fibre 150 share a headline number and almost nothing else about how they reach it.
Sky's speed arrives over a fibre line physically connected to your home. The 145–150Mbps you buy is what you get, hour after hour, regardless of weather, walls, or how many neighbours are streaming. Uploads are specified per tier, latency is low and stable — full fibre is the most reliable broadband technology available, and it behaves like it.
Three's speed arrives over the air. The 150Mbps figure is an average at peak times, and your actual experience depends on your local 5G signal strength, your distance from the mast, the construction of your home, and network congestion. In a strong signal area, Three's product genuinely delivers — and its 5G Outdoor option, which mounts an external antenna outside your home feeding an eero 6 WiFi router indoors, exists precisely to rescue homes where indoor signal is marginal. In a weak area, you may land closer to the 4G plan's 10Mbps average than the 5G plan's 150. Latency is also higher and more variable than fibre — fine for streaming and browsing, noticeable for competitive gaming and glitch-sensitive video calls.
And the ceilings differ by an order of magnitude: Three's range tops out at its 150Mbps average; Sky's runs to 900Mbps nationally and 5Gbps in CityFibre areas, with symmetrical uploads on CityFibre tiers.
The fair framing: for a small household that streams, browses, and works on video calls, a strong Three 5G signal is genuinely enough — at half the price. For larger households, gamers, upload-heavy workers, or anyone who can't tolerate variability, Sky's line is what you're paying the premium for. Before choosing Three, check its signal at your exact address — and note that 1-month flexible contracts are available on 5G plans, which makes a low-risk trial entirely possible.
Winner: Three — the category it was built to win
Order before 8pm and Three's hub arrives the next working day. Plug it in, insert the SIM, place it high and near a window, and you're online — no landline, no engineer, no appointment window, no drilling, no permission from a landlord. For renters, students, short-term tenants, house-sharers, and anyone who's ever burned a day waiting for an installation slot, this is the product's core appeal, and nothing in Sky's fixed-line world can match it. The 1-month flexible contract option on 5G plans extends the same logic to commitment: try it, keep it if the signal delivers, walk away if it doesn't.
Sky's setup is standard for fixed broadband — free on current deals, self-connect where the line exists, an engineer visit where it doesn't — and entirely reasonable. It's just not next-day plug-and-play, and it never will be.
Winner: Three — with an asterisk
Three's network covers the overwhelming majority of UK premises with 4G and a large and growing share with 5G — and since the Vodafone merger, the combined VodafoneThree network is the largest mobile operation in the country. Crucially, Three can serve homes that fixed networks have failed: rural addresses still waiting for full fibre, properties where installation is impractical, and the millions of homes where the best Openreach line is still a slow copper hybrid. Sky reaches almost everyone through Openreach and adds CityFibre in around 4.5 million homes — but where the fixed networks are weak, Sky's products are weak with them.
The asterisk: Three's usable availability is signal availability. Its postcode checker tells you whether you're covered; only the router in your actual living room tells you how well. Check your address for both providers' options before deciding.
Winner: Sky
Sky's record is the benchmark among major providers — 82% satisfaction in Ofcom's 2025 survey, the lowest complaints rate of the big brands at roughly 6 per 100,000 customers, and the Broadband Guarantee allowing penalty-free exit if a persistent speed issue isn't fixed within 30 days. Three's service record as a broadband provider is thinner and more mixed — its support is geared to a mobile operation, and resolving home broadband performance issues over the phone can be a frustrating experience when the honest answer is "your signal is what it is." The merger may change this over time as VodafoneThree builds out its fixed-wireless ambitions; today, Sky is clearly the safer pair of hands when something goes wrong.
Read more in our Sky review.
Winner: Sky — by walkover, with one twist
Three has no TV product. Sky has the country's best: Sky Stream or Sky Glass with the full Sky estate, Netflix bundled in, and FibreCompare deals from £35 a month including Full Fibre 150.
The twist is worth knowing: Sky Stream is a streaming device that works over any broadband — including Three's. A Three-5G-plus-Sky-Stream combination (£14 broadband plus a standalone Stream subscription) is a real configuration for a strong-signal household that wants Sky content without Sky broadband, and it can undercut Sky's own bundles. It also leans entirely on Three's signal quality, since live TV streaming is exactly the kind of sustained load that exposes a marginal connection. Compare bundle options on our TV and broadband deals page.
Winner: Tie — both ship the right kit for their technology
Three's hardware is better than its £14 price suggests. 5G customers receive the Zyxel NR5103E — a WiFi 6 router with peak specs of 4.7Gbps down and 2.3Gbps up (far beyond what the network will actually deliver, which is future-proofing rather than false promise), two Ethernet ports, and slots for external antennae. 4G customers get the ZTE MF286D, supporting up to 64 devices with four Ethernet ports. The standout is the 5G Outdoor plan's pairing: an externally mounted hub capturing the strongest available signal, feeding an eero 6 mesh WiFi router indoors — a genuinely thoughtful answer to fixed wireless's biggest weakness.
Sky's range runs from the Sky Broadband Hub through the WiFi 6 Max Hub to the WiFi 7 Gigafast+ Hub on CityFibre hyperfast tiers, with the WiFi Max mesh-Pod guarantee as an add-on. Tier for tier it's strong, conventional fixed-line kit.
Neither side embarrasses itself, and the comparison is apples-to-oranges by nature: Sky's hubs serve a line, Three's serve a signal. Call it a draw on merit.
Geoff Pestell, CEO of FibreCompare, gave his verdict:
"Three versus Sky is really a question about what broadband has become. For twenty years the deal was: you pay for a line, you wait for an engineer, and in exchange you get certainty. Three's proposition tears that up — £14 a month, a box through your letterbox tomorrow, no line at all. For the right household in the right location, it's the best-value broadband product in Britain, and it isn't close.
The phrase doing the heavy lifting there is 'in the right location.' Fixed wireless is a signal lottery, and the difference between a great experience and a miserable one can be one street — or one wall. So my advice to anyone tempted is to de-risk it: Three offers 1-month flexible contracts on its 5G plans, so trial it before you commit to 24 months, and look hard at the Outdoor Hub option if your indoor signal is borderline. Also go in with eyes open on the rises — £14 becoming £21 is modest in pounds but it's a 50% climb, the steepest proportional increase of any provider we list.
Sky is the answer for everyone who needs broadband to be boring — guaranteed speeds, the best service record among the majors, and the country's best TV platform. That's worth the premium for bigger households, gamers, home workers, and anyone whose evenings depend on the connection just working. The honest summary: Three is the most exciting cheap product in the market; Sky is the most dependable complete one. Know which of those your household actually needs before you choose."
Choose Three if:
Choose Sky if:
Bottom line: these products solve different problems. Three is the best pure-value and best no-installation broadband in the country — a legitimate first choice for small, flexible, signal-blessed households, and an unbeatable trial given the 1-month option. Sky is the complete traditional package: certain speeds, leading service, and the UK's best TV. If your connection is infrastructure, buy Sky. If it's a utility you want cheap and fast to set up, try Three first — after checking what both can offer at your address.
Is Three home broadband really only £14 a month? Yes — £14 with unlimited data and £0 setup on the 5G, 4G, and 5G Outdoor plans alike. Note the stated rises: £17.50 from April 2027 and £21 from April 2028, so the average over a 24-month term is around £16.30 a month. That's still well below any fixed-line equivalent.
Is 5G home broadband as good as full fibre? It can match mid-tier fibre for everyday use in strong signal areas — Three's 5G plan averages 150Mbps. But performance is signal-dependent and more variable than fibre, latency is higher, and the ceiling is far lower than fibre's gigabit-plus tiers. Full fibre remains the more reliable technology; 5G is the more convenient and cheaper one.
What if my indoor 5G signal is weak? Three's 5G Outdoor Home Broadband plan — same £14 price — mounts an external hub outside your home to capture a stronger signal, feeding an eero 6 WiFi router indoors. It's designed specifically for homes where indoor coverage is marginal.
Can I get Sky TV with Three broadband? Yes — Sky Stream works over any broadband connection, including Three's. Pairing Three's £14 broadband with a standalone Sky Stream subscription is a genuine money-saving configuration, provided your 5G signal comfortably handles sustained streaming.
Do I have to sign a 24-month contract with Three? No — 1-month flexible contracts are available on 5G plans at a higher monthly rate. Given fixed wireless performance varies by address, a flexible month or two as a trial before committing to the 24-month price is a sensible approach.
Prices and details correct at time of publication, June 2026, taken from the live deals tables on FibreCompare. Sky CityFibre pricing from a live area check and may vary by address. Enter your postcode to compare current Three and Sky deals where you live.
Tags: Three Broadband, Sky Broadband, Three vs Sky, 5G Home Broadband, Fixed Wireless, Full Fibre, Mobile Broadband, Cheap Broadband, No Landline Broadband, VodafoneThree, Broadband Deals 2026
