Three UK is now part of VodafoneThree, the merged operator created in 2025 with Vodafone holding the majority stake. The merger brings a pledged 11 billion pound network investment over ten years and regulator-agreed protections that hold certain tariffs for three years. Three's legacy strengths remain data-led: large and unlimited allowances at aggressive prices. The trade-offs are daily EU roaming charges and a network in mid-integration, which means coverage should improve markedly but can vary locally during the transition. |
Kael Tripton · UK Telecoms Desk · Primary sources only |
TL;DR
Last reviewed: July 2026 |
KEY FACTS
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| Owner | VodafoneThree: Vodafone Group 51 percent, CK Hutchison 49 percent |
| Merger completed | 2025, after CMA clearance with binding commitments |
| Network pledge | Around £11bn over ten years, 5G standalone rollout |
| Price position | Historically the cheapest of the network operators for big-data plans |
| EU roaming | Daily charge applies on current plans |
| Customer protections | Selected tariffs held for at least three years post-merger |
The merger, who owns what, and why it was allowed
In 2025 Vodafone UK and Three UK completed their merger to form VodafoneThree, with Vodafone holding 51 percent and Three's parent CK Hutchison 49 percent. The Competition and Markets Authority cleared the deal only with binding commitments: a network investment programme of roughly 11 billion pounds over ten years, and consumer protections that hold selected tariffs and data plans for at least three years.
The regulator's logic was that the UK's third and fourth largest networks, combined and investing heavily, would deliver better infrastructure than either could alone. For customers the practical consequence is a network in transition: mast estates are being consolidated, spectrum combined and 5G standalone rolled out, which points to materially better coverage over the coming years with some local turbulence on the way.
What survives of Three's identity
Three built its UK position on data: it was the first to make unlimited data mainstream and consistently priced large allowances below EE, O2 and Vodafone's main brands. That positioning has carried into the merged company's Three-branded plans, and the CMA tariff commitments mean the aggressive data pricing cannot quietly vanish in the short term.
The brand's traditional weakness was indoor and rural coverage relative to EE, a gap the combined spectrum holdings and the investment pledge are designed to close. Anyone judging Three on a coverage experience from several years ago is judging a network that is actively being rebuilt.
Tariffs, roaming and the fine print
Three-branded plans continue to span pay-monthly handset deals, SIM-only and its home broadband products delivered over the mobile network. The value case remains strongest for heavy data users: the price per gigabyte on large and unlimited plans typically undercuts rival network-operator brands.
Roaming is the notable weak point against O2 specifically: Three charges a daily fee for EU roaming on current plans. Frequent European travellers should price that daily charge into any comparison, because over a few trips it can erase the headline monthly saving.
As with all providers since early 2025, any mid-contract price rises on new contracts must be stated in pounds and pence at sign-up under Ofcom's rules, which makes the total contract cost checkable before committing.
Service record and what the merger changes
Ofcom's quarterly complaints data has historically shown Three around the middle of the pack among network operators, with peaks during network incidents. The open question for 2026 and beyond is execution: large network integrations are where service quality is won or lost, and the complaints league tables over the next several quarters will be the neutral scoreboard for whether VodafoneThree is delivering.
Complaints unresolved after eight weeks can be escalated to the communications ombudsman scheme the provider belongs to, free of charge. During an integration period, keeping dated records of any service issues is particularly worthwhile.
Switching, and who the network fits
Leaving or joining follows the standard text-to-switch process: PAC to 65075 keeps the number, STAC to the same number cancels without it, and any early-exit fee must be disclosed in the reply. Existing Three customers worried about the merger changing their deal are covered in the near term by the CMA tariff protections.
The factual fit: Three suits data-heavy users prioritising allowance size per pound, and anyone willing to trade today's patchier indoor coverage for a network with the industry's largest committed investment programme. It fits less well for frequent EU travellers, where the daily roaming fee shifts the arithmetic toward O2 and the virtual networks that include roaming.
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Editorial disclaimer This guide is informational and educational only. Kaeltripton.com is an independent editorial publisher: it runs no quote lines, routes no leads and takes no commission from any provider named on this page. Tariff details, allowances and perks change frequently: verify current terms directly with the provider and with Ofcom before switching. Kael Tripton Ltd is not authorised or regulated by the FCA. |
Frequently asked questions
Is Three still a separate network after the Vodafone merger?
Three continues as a consumer brand, but the underlying company is now VodafoneThree, jointly owned by Vodafone (51 percent) and CK Hutchison (49 percent). Customers keep their existing plans, and selected tariffs are protected for at least three years under commitments agreed with the CMA.
Does Three charge for EU roaming?
Yes: current Three plans charge a daily fee for roaming in EU destinations. Occasional travellers may find it manageable; frequent travellers should compare against providers that still include EU roaming in the monthly plan.
Will coverage get better or worse after the merger?
The merged operator has pledged around 11 billion pounds of network investment over ten years, combining both companies' spectrum and mast estates. The direction of travel is clearly better coverage, but consolidation work can cause local variability while it happens, so checking Ofcom's coverage checker for a specific postcode remains the reliable test.
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