⚖️ Comparison · Updated for 2026

FTTP (Full Fibre) vs G.fast / FTTC

Side-by-side comparison, when-to-use-each guide, and instant conversion. Reviewed for 2026.

Quick answer: G.fast (BT's fastest copper product) reaches 330 Mbps max but varies hugely by distance. FTTC reaches 80 Mbps. Full fibre (FTTP) delivers up to 1 Gbps or more, with no copper-distance limit. G.fast is a bridging technology being deployed where FTTP rollout hasn't reached yet. Always choose FTTP when available.
Decision guide — when to use which
Use FTTP (Full Fibre) when…

FTTP: always, when available. It's the permanent solution.

Use G.fast / FTTC when…

G.fast: short-term option where FTTP unavailable. Better than FTTC, not as good as fibre.

📊 Side-by-side comparison
Aspect FTTP (Full Fibre) G.fast / FTTC
Max speed 1,000 Mbps (FTTP) 330 Mbps (G.fast) / 80 Mbps (FTTC)
Distance sensitivity None High (G.fast degrades beyond 100m)
Upload speed ~100-220 Mbps on Openreach 1 Gbps (symmetric on some other networks) 20 Mbps (FTTC) / 50 Mbps (G.fast)
Future-proof Yes (10+ Gbps capable) No (bridging tech)
UK coverage ~82% of homes (Ofcom, spring 2026), still growing Still widespread but declining as copper is retired

Frequently asked

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Is G.fast worth choosing over standard FTTC?

If FTTP is not available and you're offered G.fast at no extra cost, yes. The speed uplift matters for households with multiple users streaming in 4K. If FTTP is coming to your area within 12-18 months (check Openreach's FTTP rollout map), it may not be worth switching to G.fast in the interim.

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How do I check what's available at my address?

Ofcom's connected nations checker (ofcom.org.uk) or Openreach's checker shows exact technology at your address, including whether FTTP is planned and when.

Reviewed for 2026. This comparison is general guidance based on publicly available information. Prices, rates, rules and specifications change, so check current details with the provider or an official source before making a decision. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project. We don't sell SEO links or accept paid placements in this content.

Frequently asked questions

Is G.fast worth choosing over standard FTTC?

If FTTP is not available and you're offered G.fast at no extra cost, yes. The speed uplift matters for households with multiple users streaming in 4K. If FTTP is coming to your area within 12-18 months (check Openreach's FTTP rollout map), it may not be worth switching to G.fast in the interim.

How do I check what's available at my address?

Ofcom's connected nations checker (ofcom.org.uk) or Openreach's checker shows exact technology at your address, including whether FTTP is planned and when.