UK ISP comparison
BT Broadband vs Vodafone Broadband
BT retails Openreach nationwide; Vodafone is the CityFibre anchor tenant. In CityFibre cities, Vodafone offers some of the best gigabit pricing in the UK.
About BT Broadband
BT is the UK's largest residential broadband brand, retailing Openreach FTTC and FTTP nationally.
About Vodafone Broadband
Vodafone retails Openreach FTTC and FTTP, plus CityFibre wholesale where available, with strong Together bundling for Vodafone mobile customers.
Pricing comparison
Vodafone typically prices its CityFibre gigabit tariffs at around £30 promotional, significantly below BT's £50 to £55 FTTP gigabit. Outside CityFibre cities, BT and Vodafone are more closely matched.
Speed comparison
Both retail Openreach. Vodafone on CityFibre extends to 2 Gbps in available cities, which BT FTTP does not match. Vodafone Pro II Wi-Fi guarantee is a popular value-add.
Coverage comparison
BT covers full Openreach nationally. Vodafone covers full Openreach nationally plus CityFibre cities.
Verdict
In CityFibre cities, Vodafone is the value leader on gigabit broadband. Outside CityFibre, BT and Vodafone are closely matched with the choice depending on bundle and brand preference.
Who each is best for
Vodafone suits CityFibre-city households who want gigabit at the best headline price. BT suits nationwide households who want the largest UK telco brand.
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 BT Broadband and Vodafone 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.