G.Network Fibre Speed Test Guide (2026)

G.Network customers in London should receive average download speeds of 150–300Mbps on the Ultrafast plan or up to 1,000Mbps (1Gbps) on the Gigafast plan, with upload speeds of up to 100Mbps and 900Mbps respectively. G.Network is a London-focused full fibre (FTTP) alternative network operator, rated the number one full fibre provider on Trustpilot in London. If your results are falling short, there are practical steps to diagnose and improve performance.

Expected G.Network Speeds by Package

G.Network offers two main residential tiers in London. The Ultrafast 300Mbps plan delivers approximately 150–300Mbps download with up to 100Mbps upload, available from £23 per month on a 24-month promotional contract. The Gigafast 1Gbps plan reaches approximately 1,000Mbps download and up to 900Mbps upload, from £35 per month on a rolling monthly contract. G.Network's pricing increases after the promotional period, so it is worth reviewing renewal terms carefully. G.Network builds its own dedicated full fibre network in London, operating independently of Openreach. This means its speeds and reliability are governed by its own infrastructure rather than Openreach's performance in a given area. Community Fibre and Hyperoptic are the main competitors in the London full fibre market and offer similarly high speeds. G.Network includes a Full-On WiFi mesh system with select packages, which can improve whole-home coverage.

How to Run a Speed Test on G.Network Broadband

For a reliable G.Network speed test, connect your device to the G.Network-supplied router using an ethernet cable. This bypasses Wi-Fi entirely and gives you the most accurate reading of your actual broadband line speed. On the Gigafast 1Gbps plan, ensure your ethernet adapter supports Gigabit (1Gbps) speeds — many laptops and older desktop computers have 100Mbps fast ethernet ports, which will cap your result at around 94Mbps even if your line is delivering 1Gbps. Pause all background app updates, streaming, and downloads before starting. Run the test three or more times and average the results — a single test can be affected by momentary server load. Testing at different times of day (off-peak around 11am versus peak at 9pm) reveals how much the network is loaded in your area. G.Network's full fibre network is all-digital with no copper segments, so speeds should be very consistent across the day on a correctly configured connection.

Understanding Your G.Network Speed Test Results

Speed test results will display four key figures. Download speed (Mbps) is the headline number — it determines how quickly video streams load, files download, and web pages open. Upload speed is important for video calls and cloud backups; G.Network's Gigafast plan delivers up to 900Mbps upload, which is high for a residential plan. Latency (ping in milliseconds) on G.Network full fibre should be under 20ms to UK servers — typical for all FTTP connections. Jitter measures variability in latency; for gaming and video calls, aim for under 5ms. If your measured download is significantly below the average speed advertised for your plan, check for known outages on G.Network's service status page. Because G.Network operates its own independent network, faults are outside the Openreach infrastructure and must be diagnosed and resolved by G.Network's own engineers. BT on Openreach provides a comparable latency profile in London, but G.Network's dedicated infrastructure can deliver more consistent performance in areas where Openreach is under high demand.

How to Improve Your G.Network Broadband Speeds

Router placement in a dense urban London flat block can be challenging due to thick concrete walls, metal doors, and dozens of competing Wi-Fi networks from neighbouring flats. Position the G.Network router in a central location and use the 5GHz band (faster and less congested) for nearby devices and 2.4GHz for devices further away that need range over speed. G.Network's Full-On WiFi mesh add-on (available for select packages) adds additional access points, which is particularly useful in larger flats or houses. Ethernet is the single most reliable improvement — a wired connection avoids all Wi-Fi interference and often delivers double the measured speed for gaming consoles, smart TVs, and desktop computers. Restart your router monthly to apply firmware updates. If you experience persistent slow speeds or dropouts, contact G.Network's support team; as a smaller operator, G.Network prides itself on responsive customer service and a 3-month satisfaction guarantee on select plans.

Compare Broadband Deals at Your Address

G.Network is one of several full fibre providers competing in London. Use CompareFibre to check whether G.Network or competitors like Community Fibre and Hyperoptic are available at your address, and compare prices and speed tiers side by side.

Frequently Asked Questions

Is G.Network available outside London?

As of April 2026, G.Network is a London-focused full fibre provider. It is actively expanding its footprint across more London boroughs but does not currently serve areas outside Greater London. If you are outside London, providers like Community Fibre, Hyperoptic, or BT Full Fibre may be available depending on your location.

What latency does G.Network deliver?

G.Network's full fibre connection delivers typical latency under 20ms to UK servers, consistent with all FTTP services. For gaming, video calls, and real-time applications, this is well within acceptable limits. A wired ethernet connection will always produce lower latency than Wi-Fi.

Does G.Network use the Openreach network?

No. G.Network builds and operates its own dedicated full fibre network in London, independently of Openreach. This means G.Network customers are not affected by Openreach maintenance windows or industrial action. Faults on the G.Network infrastructure must be resolved by G.Network's own engineering teams.

Related Guides

Community Fibre Broadband Reviews · Hyperoptic Broadband · BT Fibre Speed Test · Broadband Speed Guide · London Fibre Broadband

Methodology

This guide is based on publicly available data from Ofcom, provider websites, and independent sources including ISPreview.co.uk, Thinkbroadband, and Point Topic. Pricing, speeds, and availability were verified in April 2026 and are subject to change. CompareFibre is editorially independent — providers do not pay for placement or influence our recommendations.