Sky Full Fibre Gigafast Broadband Review 2026
Sky Full Fibre Gigafast offers an average 900Mbps download speed over a full-fibre connection. It is one of Sky’s fastest widely available packages and gives larger households enough bandwidth for simultaneous streaming, gaming, video calls and large downloads.
The upload speed needs closer attention. Openreach connections offer an average 90Mbps upload speed, while eligible CityFibre orders include 900Mbps symmetrical speeds. Your order summary confirms the network, upload speed and minimum guaranteed speed available at your home.
Gigafast is an excellent choice for heavy users, but many households will get everything they need from Full Fibre 500 at a lower cost. The current deals table below lets you check the latest package price, reward, setup charge and switching-credit offer.
Please Note: Prices may change during 24-month minimum term
| Plan | Average Speed | Offer | Price |
|---|---|---|---|
| Sky Full Fibre Gigafast24 month contract | 900Mbdownload100Mbupload | £90 voucherEnds 8th OctFree setup | £28 per month£582 contract costGet deal |
Sky Hub router router included.
| |||
Use our postcode checker to compare deals available at your address
Sky Full Fibre Gigafast at a glance
| Feature | Details |
|---|---|
| Average download speed | 900Mbps |
| Average upload speed | 90Mbps through Openreach; 900Mbps on eligible symmetrical CityFibre orders |
| Broadband connection | Full fibre to the premises |
| Standard router | Sky Broadband Hub with Wi-Fi 5 |
| Wi-Fi upgrade | Sky WiFi Max with the Wi-Fi 6 Sky Max Hub |
| Minimum term | 24 months |
| Data allowance | Unlimited |
| Availability | Postcode dependent |
| Best for | Larger households, frequent large downloads and heavy cloud use |
Sky Gigafast advantages and disadvantages
Advantages
- Average 900Mbps download speed
- Full-fibre connection to the home
- 900Mbps symmetrical speed on eligible CityFibre orders
- Enough bandwidth for extensive simultaneous use
- Sky TV and home phone options
- Speed Guarantee and optional whole-home Wi-Fi service
Disadvantages
- Openreach upload speed is limited to an average 90Mbps
- Standard package uses the older Wi-Fi 5 Sky Broadband Hub
- WiFi Max costs extra
- 24-month minimum term
- Light and moderate users are unlikely to benefit from all the available bandwidth
Households suited to Sky Gigafast
Gigafast is best for homes that regularly transfer large amounts of data. A household with several people streaming, gaming, joining video calls and downloading files at the same time can use its additional bandwidth without one activity slowing another.
Game downloads are a good example. A 100GB download takes close to 15 minutes at 900Mbps under ideal conditions. The same download takes close to 27 minutes at 500Mbps. Actual times are longer when the download server, home network or device cannot maintain the full connection speed.
The package is also useful for photographers, video editors and other home workers who send large files to cloud storage. CityFibre’s symmetrical Gigafast connection is particularly attractive for this type of use because its upload speed is equal to the download speed.
A faster package does not reduce every delay. Online gaming uses little bandwidth once a game is running, so latency, jitter and packet loss have more influence than a 900Mbps download speed. Gigafast’s main gaming benefit is shorter installation and update downloads while other people continue using the connection.
Households using broadband mainly for browsing, social media, video calls and a few television streams do not need 900Mbps. Sky Full Fibre 150 or Full Fibre 500 will usually meet those requirements at a lower cost. Our Sky Full Fibre 150 review explains the entry-level package in more detail.
Download and upload speeds
Sky Gigafast offers an average 900Mbps download speed. This figure refers to the broadband connection reaching the hub during the busiest part of the day. It does not guarantee 900Mbps over Wi-Fi to every phone, computer or television.
The full-fibre line avoids the speed loss associated with copper telephone wiring. Distance from the street cabinet is therefore not the deciding factor. The speed received by an individual device still depends on its network hardware, the router, the connection method and conditions inside the home.
Openreach and CityFibre connections
Sky uses both Openreach and CityFibre for full-fibre broadband. The network available at the home determines the upload speed attached to the Gigafast order.
| Connection | Average download speed | Average upload speed |
|---|---|---|
| Openreach | 900Mbps | 90Mbps |
| CityFibre | 900Mbps | 900Mbps |
The download experience is similar on either connection. The difference becomes significant when uploading large videos, maintaining cloud backups or sending project files.
A 100GB upload takes close to two hours and 28 minutes at 90Mbps under ideal conditions. At 900Mbps, the same upload takes close to 15 minutes. The individual order summary should therefore be checked before choosing Gigafast for upload-intensive work.
Speed received by one device
A computer connected by Gigabit Ethernet can use most of a 900Mbps connection, but network overhead prevents a speed test from displaying the full nominal capacity of a 1Gbps port. Older computers, inexpensive adapters and damaged cables can reduce the result further.
Wi-Fi has more variables. A compatible device near the router can receive faster speeds than an older phone in another room, but walls, floors, neighbouring networks and electrical interference all reduce wireless performance.
The connection can also deliver 900Mbps across several devices even when no single device reaches that figure. One computer could download a game while televisions stream video and other family members use video calls without using all the available bandwidth on one device.
Sky Speed Guarantee
Sky gives each order a personalised minimum guaranteed download speed. This is not a universal figure for every Gigafast customer because the guarantee depends on the individual connection.
The guarantee concerns the speed reaching the Sky hub rather than the Wi-Fi speed received in each room. If the hub speed remains below the personalised minimum for three consecutive days, Sky’s guarantee gives the customer access to the stated remedy. This can include an upgrade without an upfront charge or leaving the broadband and Talk contract without an early termination charge when Sky cannot restore the connection.
Keep the order confirmation because it records the guaranteed figure for the home. Tests should use Sky’s recommended method and allow time for faults to be investigated.
Gigafast download and upload calculator
Use the calculator below to compare transfer times for the 900Mbps download speed, the 90Mbps Openreach upload speed and a 900Mbps symmetrical CityFibre order. The results are estimates because servers, devices and local network conditions can extend the transfer time.
[Insert Broadband Analyst download and upload calculator here: 900Mbps download, with 90Mbps and 900Mbps upload profiles]
Sky Gigafast router and Wi-Fi
The standard Gigafast package includes the Sky Broadband Hub. It is a dual-band Wi-Fi 5 router with four Gigabit Ethernet ports. On a full-fibre installation, one Ethernet port connects the hub to the optical network terminal, leaving three ports for wired equipment.
Wi-Fi 5 is adequate for browsing, streaming and everyday device use, but it is old equipment for a 900Mbps package. Recent Wi-Fi 6 phones and computers cannot use the newer wireless standard unless the customer adds WiFi Max or uses suitable third-party equipment.
The Broadband Hub can still distribute the Gigafast connection across many devices. Its main limitation is the speed and coverage available to individual wireless devices, particularly in larger homes or rooms separated by solid walls.
Sky WiFi Max
WiFi Max replaces the standard router with the dual-band Wi-Fi 6 Sky Max Hub. Wi-Fi 6 manages busy multi-device homes more efficiently and can deliver faster wireless speeds to compatible equipment.
The service includes a 25Mbps Wi-Fi guarantee in every eligible room for Gigafast customers. Sky can supply up to three Max Pods and arrange an engineer visit when they are required to meet the guarantee.
The guarantee excludes gardens, sheds and other outbuildings. It therefore does not promise 25Mbps inside a detached garden office. A wired Ethernet connection, an independently installed access point or a suitable mesh system is better for that situation.
WiFi Max is most useful in a larger home with weak rooms or many active wireless devices. A smaller home with good router placement might not need the monthly add-on. Testing coverage with the standard hub before paying for an upgrade gives a clearer answer.
The Wi-Fi 7 Gigafast+ Hub is not the router supplied with the 900Mbps Gigafast package. Sky reserves that router for its 2.5Gbps and 5Gbps Gigafast+ packages.
Full Fibre 500 or Gigafast
Full Fibre 500 is the better-value package for many busy households. Its average 500Mbps download speed is enough for several 4K streams, remote working, online gaming and frequent downloads at the same time.
Gigafast becomes more valuable when large transfers are a routine part of the day or many people regularly use the connection together. It also reduces waiting time for new games and large system updates, provided the download source can send the data fast enough.
| Feature | Full Fibre 500 | Full Fibre Gigafast |
|---|---|---|
| Average download speed | 500Mbps | 900Mbps |
| Estimated 100GB download | 27 minutes | 15 minutes |
| Household use | Busy multi-device homes | Larger households and frequent large downloads |
| Equipment requirement | Easier to use over typical home Wi-Fi | Wired or newer Wi-Fi equipment gives better results |
The download estimates assume the full listed speed and exclude network overhead. They compare the packages but should not be treated as guaranteed completion times.
Choose Full Fibre 500 when normal household activity is the priority. Choose Gigafast when shorter large downloads, extensive simultaneous use or the CityFibre symmetrical upload speed justifies the additional monthly cost.
Installation and availability
Sky’s standard full-fibre packages, including Gigafast, are available to 79% of UK homes. This does not mean every premise within an enabled area can order the package. Network capacity, the individual building and the connection serving the premise still affect availability.
The postcode checker confirms whether Sky can use Openreach or CityFibre at the home. It also displays the available upload speed, estimated speed range and personalised minimum guarantee.
A full-fibre installation uses an optical cable from the network to an optical network terminal inside the home. The Sky hub connects to this terminal using an Ethernet cable. A home that already has a compatible terminal can have a simpler activation, while a new connection normally requires an engineer.
The engineer needs access to a suitable entry point and a mains socket near the terminal. Customers in flats, rented homes or premises requiring external work should obtain any necessary permission before the appointment.
Sky Talk uses the broadband connection for calls on full-fibre packages. The telephone connects to the hub instead of the old wall socket. Internet calls stop during a power cut unless suitable backup equipment is available, so customers who rely on telecare alarms or other essential telephone equipment should discuss their requirements before switching.
Contract, price changes and switching
Sky Gigafast comes with a 24-month minimum term. Ending the service early normally creates an early termination charge unless a contractual right to leave applies.
The monthly charge can change during the minimum term. The order information explains the current price-change rules and the higher charge that applies after the minimum term. These details should be checked alongside the total contract cost rather than relying only on the introductory monthly price.
Sky offers switching credit towards eligible broadband termination charges from a previous provider. The maximum credit and current claim requirements appear in the deal table. Customers need evidence of the old provider’s charge and must submit the claim within the stated period.
Gigafast includes unlimited data, so there is no monthly data allowance to manage. The service remains subject to Sky’s terms for normal domestic broadband use.
Sky TV and home phone options
Gigafast can be ordered with Sky TV and Sky Talk. Sky Stream delivers television through the broadband connection, so it does not require a satellite dish. A 900Mbps connection has far more bandwidth than a household needs for several Sky Stream devices.
Buying broadband and television together can simplify billing, but it does not automatically produce the lowest total cost. Compare the full minimum-term price, setup charges, television package and any reward before ordering.
Our Sky broadband and TV deals guide examines the available bundles and current offers in greater detail.
Gigafast compared with rival 900Mbps packages
Several major providers offer broadband at a similar download speed. Upload speed, router equipment, contract terms and network availability create the more useful differences.
| Package | Average download and upload speeds | Main difference |
|---|---|---|
| Sky Full Fibre Gigafast | 900Mbps download; 90Mbps Openreach upload or 900Mbps on eligible CityFibre orders | Sky TV bundles and two possible access networks |
| BT Full Fibre 900 | 900Mbps download; 110Mbps upload | Faster Openreach upload than Sky and a Wi-Fi 6 standard router |
| Vodafone Full Fibre 910 | 910Mbps download; 105Mbps Openreach upload or 910Mbps on CityFibre | Symmetrical CityFibre service and Wi-Fi 6 standard router |
| Plusnet Full Fibre 900 | 900Mbps download; 115Mbps upload | Faster Openreach upload with simpler package options |
| Virgin Media Gig1 | 1,130Mbps download; 104Mbps upload on the standard Gig1 service | Faster average download and Wi-Fi 6 Hub 5 |
Sky’s clearest advantages are its television options and access to symmetrical Gigafast in eligible CityFibre areas. Its standard Openreach upload speed is lower than the comparable BT, Vodafone and Plusnet packages, while the Wi-Fi 5 Broadband Hub is less advanced than the standard Wi-Fi 6 equipment supplied by BT, Vodafone and Virgin Media.
Price can change the result. Current monthly charges, setup costs and rewards should be compared over the full minimum term. A large reward does not compensate for a higher total contract cost unless the customer receives and uses it.
Customer service and complaints
Sky recorded five broadband and landline complaints per 100,000 customers during the first quarter of 2026. The industry average was six, placing Sky slightly better than the average across the providers included in the report.
Complaint figures give a useful comparison but do not measure every customer’s experience. Installation quality can also depend on the access network and engineer completing the work.
Sky offers help through its online account, messaging services, telephone teams and diagnostic tools. Our main Sky broadband review examines customer service, complaints and Sky’s wider package range.
Is Sky Full Fibre Gigafast any good?
Yes. Sky Full Fibre Gigafast is an excellent choice for larger households, frequent game downloads and homes that regularly transfer large files. The average 900Mbps download speed gives several people room to use broadband heavily at the same time without competing for limited bandwidth.
The network available at the home changes the recommendation. An eligible CityFibre order with 900Mbps symmetrical speeds is particularly attractive for cloud backups, video production and other upload-intensive work. The Openreach version remains fast for downloads, but its average 90Mbps upload speed is lower than comparable packages from BT, Vodafone and Plusnet.
The standard Wi-Fi 5 router is the package’s other weakness. It can distribute the connection across the home, but customers expecting very fast speeds on individual wireless devices should consider WiFi Max, suitable third-party equipment or wired Ethernet.
Full Fibre 500 offers better value for most households. Gigafast is worth paying extra for when large transfers and extensive simultaneous use occur frequently, rather than simply because it is the faster package.
Sky Gigafast FAQs
Will Sky Gigafast have 90Mbps or 900Mbps upload speed?
An Openreach Gigafast connection offers an average 90Mbps upload speed. An eligible symmetrical CityFibre order offers a 900Mbps upload speed equal to the download speed. The order summary confirms the access network and upload speed available at the home.
Does Sky Gigafast include the Wi-Fi 6 Sky Max Hub?
The standard Gigafast package includes the Wi-Fi 5 Sky Broadband Hub. Adding WiFi Max supplies the Wi-Fi 6 Sky Max Hub and access to Sky’s room-by-room Wi-Fi guarantee. The Wi-Fi 7 Gigafast+ Hub belongs to the separate 2.5Gbps and 5Gbps packages.
Can one device receive the full 900Mbps over Wi-Fi?
A recent device near the Sky Max Hub can receive very fast wireless speeds, but Sky does not guarantee 900Mbps to one device over Wi-Fi. The router, device, distance, walls and interference affect the result. A wired Gigabit Ethernet connection gives a more consistent test, although network overhead prevents it from displaying the port’s full nominal capacity.
Is Sky Gigafast the same as Sky Gigafast+?
No. Full Fibre Gigafast is the 900Mbps package. Gigafast+ refers to Sky’s 2.5Gbps and 5Gbps symmetrical packages in eligible CityFibre areas. Gigafast+ also uses a Wi-Fi 7 router capable of managing multi-gigabit connections.
Does the WiFi Max guarantee include a garden office or outbuilding?
No. The WiFi Max room guarantee excludes gardens, sheds and other outbuildings. A detached garden office therefore needs a separate wireless or wired solution. Sky can supply Max Pods for eligible rooms inside the main home.
