Fibre Optic Broadband Explained 2026

Fibre optic broadband uses glass or plastic fibres to transmit data as pulses of light, offering far higher speeds and lower latency than copper wire. In the UK, full fibre optic broadband (FTTP — Fibre to the Premises) now covers 78% of premises and delivers speeds from 100Mbps to 2Gbps+. It is the fastest, most reliable residential broadband technology available in 2026, and prices have fallen significantly — starting from under £25/month.

How Does Fibre Optic Broadband Work?

Fibre optic cables contain thin strands of glass or plastic. Data is encoded as pulses of light and transmitted through total internal reflection — light bounces along the length of the fibre without escaping. Because light travels much faster than electrical signals through copper, and experiences minimal resistance, fibre optic cables can carry enormous amounts of data over long distances with very low signal loss. When you connect to a full fibre (FTTP) service, a fibre optic cable runs from the provider's network exchange all the way to an Optical Network Terminal (ONT) installed inside or outside your home. The ONT converts the light signal to an electrical signal, which your router then uses to distribute Wi-Fi and wired connections throughout your property. Unlike FTTC, where the final stretch uses copper telephone wire (which degrades with distance and age), FTTP maintains consistent performance regardless of distance from the exchange.

Speeds and Performance of Fibre Optic Broadband

Full fibre residential packages in the UK start at 100Mbps and extend to over 2Gbps. Ofcom's 2025 data shows the average UK broadband speed at 223Mbps — already well within the FTTP range. Most households can meet all their internet needs on 100–300Mbps full fibre. Entry-level 100Mbps FTTP packages from providers like BT and Plusnet cost from approximately £22–27/month. Hyperoptic and Community Fibre offer 1Gbps symmetrical plans in urban areas. Latency on full fibre is typically 5–20ms, which is excellent for gaming, video conferencing, and cloud applications. Jitter (variation in latency) is also lower on fibre optic than copper-based connections, resulting in a more stable and consistent experience.

Fibre Optic vs Cable vs 5G Broadband

Virgin Media uses a hybrid fibre-coaxial (HFC) cable network, which is also capable of gigabit speeds and covers around 55% of UK premises. While fast, cable connections can experience more congestion than FTTP at peak times because the coaxial section is shared between multiple households. FTTP uses a dedicated fibre connection per home, providing more consistent speeds. 5G home broadband is emerging as a wireless alternative but currently delivers 50–200Mbps with higher latency (20–50ms) and potential data congestion in dense areas. For the most consistent speeds and lowest latency, FTTP remains the gold standard. Providers like Community Fibre in London offer 1Gbps symmetric FTTP at competitive prices, demonstrating how affordable full fibre has become.

How to Get Fibre Optic Broadband

Fibre optic broadband (FTTP) is available to 78% of UK premises as of 2025. The remaining 22% — mainly rural areas — are being addressed through Project Gigabit, the government's £5 billion rural connectivity programme. To get FTTP, check whether it's available at your specific address using CompareFibre's postcode checker. If available, choose a provider and package. An Openreach or network engineer will visit to install the ONT — this is typically free and takes 2–4 hours. Your existing copper telephone line does not need to be retained for FTTP. Most providers include their router free of charge with the installation. Gigabit-capable broadband (including FTTP) now reaches 87% of UK premises per Ofcom 2025 data.

Compare Broadband Deals at Your Address

Full fibre optic broadband is available to most UK addresses. Use CompareFibre to see which providers offer FTTP at your postcode — from national names like BT and Virgin Media to local altnets that may offer faster speeds or better value.

Frequently Asked Questions

Is fibre optic broadband the same as full fibre?

In common usage, 'fibre optic broadband' typically refers to FTTP (Fibre to the Premises) — a full fibre connection using fibre optic cable all the way to your home. However, FTTC is also technically a fibre optic connection for the first part of the journey. When buying broadband, 'full fibre' or 'FTTP' are more precise terms for the faster product.

How fast is fibre optic broadband in the UK?

Full fibre (FTTP) packages in the UK currently range from 100Mbps to over 2Gbps download speed. The average UK broadband speed in 2025 is 223Mbps (Ofcom). Most full fibre entry-level packages (100–150Mbps) cost from £22–27/month, with gigabit options from £29–50/month depending on provider.

Does fibre optic broadband require a phone line?

No. Full fibre (FTTP) does not require a traditional copper telephone line. An Optical Network Terminal (ONT) is installed at your property to receive the fibre signal. If you want to retain a phone number, most providers offer VoIP (Voice over IP) digital phone services.

Related Guides

What Is Fibre Broadband · Fibre Broadband Packages · Fibre Broadband in My Area · Ultrafast Broadband · Gigabit Broadband Deals

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.