Sky Full Fibre 300 offers a 300Mbps average download speed, enough for several people to stream, work and play online while a large file downloads. The network makes a much bigger difference when you send files. A 4GB video takes about 13 minutes 20 seconds at the 40Mbps average upload speed on Openreach, compared with 1 minute 47 seconds at 300Mbps on CityFibre.
Full Fibre 300 is better plan if game downloads often hold you up on 150Mbps, or if you can get the CityFibre version for faster uploads. A small price difference can make Full Fibre 500 better value if you download large games most weeks.
Plan details
| Feature | Sky Full Fibre 300 |
|---|---|
| Average download speed / average upload speed | Openreach 300Mbps / 40Mbps. CityFibre 300Mbps / 300Mbps where available. |
| Connection type | Fibre to the premises (FTTP) via Openreach or CityFibre |
| Supplied equipment | Sky Max Hub (SR213 or SR213A) with Wi-Fi 6 where listed on the order. Sky also uses the Broadband Hub (SR203) with Wi-Fi 5 on existing connections. |
| Speed protection | Sky Speed Guarantee. The order confirmation gives the minimum download speed to your hub. |
| Price changes | Sky can change the monthly charge during the minimum term. Its current terms add £5 a month when that term ends. |
| Installation and transfer | An engineer installs the fibre line and indoor fibre box if your home needs a new connection. Sky handles provider transfers through One Touch Switch. |
| Additional options | WiFi Max for coverage, Sky Stream Essential TV or Ultimate TV, and Sky Talk calling packs |
If the speed to your hub falls below your guaranteed minimum for three consecutive days in a 30-day period, Sky’s Speed Guarantee lets you cancel early without termination charges or change package without upfront fees.
Pros and cons
| Pros | Cons |
|---|---|
| A large download can run alongside two cloud gaming sessions if you limit its speed. | Two 60GB games downloading together can take about 53 minutes each. |
| Four people can join separate Full HD video calls with upload bandwidth to spare on Openreach. | A large cloud backup can use most of the Openreach upload bandwidth. |
| CityFibre makes sending finished videos and backing up large folders much quicker. | Homes that frequently download large games get shorter waits on Full Fibre 500. |
What you can do with 300Mbps speeds
Count what people are doing at the same time. A home with 15 connected devices can use less bandwidth than a home with two consoles downloading games.
| Activity | Bandwidth in use | What remains at the plan’s average speeds |
|---|---|---|
| Four separate 1080p Zoom calls | 12Mbps download and 15.2Mbps upload | 288Mbps for downloads and 24.8Mbps for uploads on Openreach |
| Two GeForce NOW sessions at 4K/120fps, with a download limited to 150Mbps | 240Mbps of download bandwidth | 60Mbps for other downloads and streams |
| Two 1080p Zoom calls during a cloud backup capped at 25Mbps | 32.6Mbps of upload bandwidth | 7.4Mbps for other uploads on Openreach |
If calls break up whenever a backup starts, set an upload limit in the backup app or schedule it for later. Transfer estimates assume the stated speed throughout and use decimal gigabytes.
Sky Broadband Router
The Sky Max Hub uses Wi-Fi 6 on 2.4GHz and 5GHz. It has four Gigabit Ethernet ports. On full fibre, one connects to the fibre box, leaving three for wired devices. You can connect a console, a work computer and a Sky Stream puck directly if they are near the hub.
The older Sky Broadband Hub uses Wi-Fi 5 and can also deliver 300Mbps over Gigabit Ethernet. A wired speed test helps you see whether a slow result in another room comes from the broadband line or the wireless connection. Sky broadband routers
On Full Fibre 300, the optional WiFi Max service sets a 25Mbps minimum Wi-Fi speed in covered rooms. Sky supplies up to three Max Pods where needed. The Max Hub is the router, and WiFi Max is the separate coverage subscription. Sky WiFi Max
Home phone and Sky TV
Full Fibre 300 comes with Sky Talk Pay As You Talk. Calls cost extra, and your handset connects to the hub through Sky Internet Calls. The phone needs both mains power and a working broadband connection. If you regularly use the home phone, compare Sky’s inclusive calling options at checkout.
You can add Sky Stream to Full Fibre 300. The Sky Stream puck connects to your TV by HDMI and gets its signal over broadband. Sky Essential TV offers 100+ channels, including Sky Atlantic and 90 free-to-air channels, plus Netflix Standard with Ads and discovery+ Entertainment.
Sky Ultimate TV offers 130+ channels, adding Sky One, Sky Witness and Sky Documentaries. It also includes Disney+ Standard with Ads, HBO Max Basic with Ads and selected Hayu shows. Sky Sports, Sky Cinema and TNT Sports are paid extras.
For Sky programmes in 4K, you need Ultimate TV, the Ultra HD and Dolby Atmos add-on and a 4K TV. Netflix in 4K requires the separate Netflix Premium upgrade. Sky recommends at least 30Mbps for a single puck streaming in 4K, well below the plan’s 300Mbps average download speed. You can connect the puck to the hub by Ethernet if Wi-Fi is weak at the TV.
Sky Full Fibre 300 for gaming
Fortnite, Rocket League and Call of Duty are all playable on this package. The step up from Full Fibre 150 saves time when you install a game or download an update. If a game launcher uses the whole connection, cap its download speed while other people are online.
| Download size | Calculated time at 300Mbps |
|---|---|
| 15GB update | 6 minutes 40 seconds |
| 60GB game | 26 minutes 40 seconds |
| 100GB game | 44 minutes 27 seconds |
In March 2023 UK broadband tests, Sky’s 500Mbps full fibre service recorded a median download speed of 483.9Mbps and median latency of 6.6ms. Virgin Media’s 516Mbps cable service recorded 12.5ms median latency in the same tests. These figures are historical comparisons. Your Full Fibre 300 ping depends on the route to the game server and how your device connects to the hub.
Cloud gaming needs more download bandwidth because it streams the game to your screen. Two supported GeForce NOW sessions at 4K and 120fps need 90Mbps between them, leaving 210Mbps at the plan’s average download speed. NVIDIA also requires latency below 80ms to its data centre.
Sky Full Fibre 300 for streaming
Sky recommends at least 25Mbps for Stream and 30Mbps for UHD viewing or an extra puck. Two Sky Stream UHD streams, allowing 30Mbps each, and two Netflix 4K streams, allowing 15Mbps each, use 90Mbps between them. That leaves 210Mbps of download bandwidth on a connection delivering 300Mbps.
Each screen still needs a good connection to the hub. If a single puck buffers in a distant room while the others play normally, test it over Ethernet or improve the Wi-Fi signal in that room before paying for a faster package.
Is Sky Full Fibre 300 any good?
Full Fibre 300 is a good buy for a household that stream 4K videos, regularly downloads large files while other people are online. The CityFibre version is particularly suitable for anyone who sends large video projects or backs up several computers.
If your household mainly watches TV, makes video calls and plays games that are already installed, Full Fibre 150 is usually enough. If several people download large games every week, compare the price of Full Fibre 500 before committing.
Alternatives to consider
| Alternative | Average download speed / average upload speed | Reason to compare |
|---|---|---|
| BT Full Fibre 300 | 300Mbps / 49Mbps | The same average download speed with faster uploads than Sky’s Openreach version. |
| Plusnet Full Fibre 300 | 300Mbps / 50Mbps | A broadband-only option with a 12-month deal available. |
| Virgin Media M250 | 264Mbps / 25Mbps | A slightly slower option on a separate network for homes mainly streaming and browsing. |
| Virgin Media M350 | 362Mbps / 36Mbps | Faster downloads than Sky 300, with a slightly lower average upload speed than its Openreach version. |
| EE 300Mbps Core Broadband | 300Mbps / 50Mbps | Comes with EE’s Wi-Fi 7 Smart Hub 7 Plus. |
Sky Full Fibre 300 FAQs
How can I tell whether Sky Full Fibre 300 uses Openreach or CityFibre?
Check the upload estimate for your address when you order. The 40Mbps average upload speed identifies the Openreach version. The CityFibre version offers a 300Mbps average upload speed where Sky makes it available.
What is the minimum guaranteed speed on Sky Full Fibre 300?
Sky Full Fibre 300 comes with a minimum download speed of 200Mbps to the Sky Hub. Check your order confirmation for the figure that applies to your line. If the speed to the hub stays below your guaranteed minimum for three consecutive days or more, Sky’s Speed Guarantee allows you to leave your broadband and Talk contracts without early termination charges, subject to its terms.
Why is my Sky Full Fibre 300 speed test stuck at about 94Mbps?
That result often points to a wired link operating at 100Mbps. Check the link speed on your computer, then try a different Ethernet cable and a Gigabit port on the Sky hub. If there’s a switch or powerline adapter between the two, connect the computer directly to the hub and repeat the test.
Do I need a new fibre installation to upgrade from Sky Full Fibre 150 to 300?
Sky can usually change the speed remotely if you keep the same fibre network and your existing equipment supports the upgrade. A move between Openreach and CityFibre can require an engineer and a different fibre box. Sky confirms the installation arrangements when you order.
Can I keep my landline number when I switch to Sky Full Fibre 300?
Ask Sky to transfer your number when you place the order. Sky will confirm whether it can keep the number. Leave the old phone service active until the transfer is arranged.