UK ISP comparison
Community Fibre vs BT Broadband
Community Fibre is London's leading altnet. BT is the national incumbent. In London, the comparison is sharp on price.
About Community Fibre
Community Fibre is the largest London-only altnet with symmetric full fibre up to 3 Gbps.
About BT Broadband
BT retails Openreach FTTC and FTTP nationally.
Pricing comparison
Community Fibre symmetric gigabit typically prices well below BT FTTP gigabit. Community Fibre 3 Gbps is unmatched by BT FTTP.
Speed comparison
Both can deliver gigabit. Community Fibre is symmetric and tops at 3 Gbps. BT FTTP tops at 900 Mbps.
Coverage comparison
Community Fibre passes approx 1.4 million London premises. BT is nationwide on Openreach.
Verdict
In Community Fibre footprint, Community Fibre wins on price and top speed. Outside, BT is the natural choice.
Who each is best for
Community Fibre suits London households on price. BT suits broader households wanting brand depth.
How to switch
- Check availability at your postcode for both providers. Coverage matters more than the headline brand.
- Compare like-for-like on speed, contract length and total cost of ownership for 12 to 24 months.
- Use One Touch Switch to move. Your new provider does the heavy lifting.
- Test your speed after the switch on UKSpeedTest.co.uk and complain if it materially underperforms.
Last updated: May 2026. Pricing changes frequently. Always check the latest tariff at the provider's own site or via SearchSwitchSave.com.
Common questions
How long does a switch between Community Fibre and BT Broadband take?
Under the UK One Touch Switch process introduced by Ofcom in 2024, most switches between two UK fixed-line broadband providers complete within ten working days. The gaining provider takes responsibility for the switch and your existing contract ends automatically. See Fibreswitch.com for the live status of your switch.
Will I lose service during the switch?
Most One Touch Switch moves between Openreach-based providers happen with no service downtime, because the underlying line stays connected. Moves between Openreach and a separate network (Virgin Media, Hyperoptic, Community Fibre, Netomnia, CityFibre via altnet retailer) can involve a brief overlap period to avoid any gap in connectivity. Your gaining provider will confirm the precise method during the order.
Can I keep my router?
Generally no. Most UK ISPs issue their own router optimised for their network and supply chain. You can use your own router on most Openreach FTTC and FTTP services, but bear in mind support and Wi-Fi guarantees apply to the supplied router. Cable, XGS-PON and certain proprietary altnet networks require the supplied modem or ONT.
Is the switch process the same in Northern Ireland?
One Touch Switch covers Great Britain. In Northern Ireland, switching processes follow Ofcom NI guidance and may differ for the Hull region where KCOM operates the historic incumbent network. Check with your gaining provider for region-specific guidance.