Vodafone Three Merger: What It Means for Your Business Mobile

Published: 15 March 2026 • Compare The Networks

The merger of Vodafone and Three is the biggest shake-up in UK mobile in over a decade. If your business uses either network — or you are considering switching — this guide explains what is changing, what is staying the same, and what you should do right now to protect your business.

What Is Happening?

Vodafone UK and Three UK (owned by CK Hutchison) are merging to form a single combined network. The deal, valued at competitive rates billion, was approved by the Competition and Markets Authority (CMA) in 2025 with conditions designed to protect consumers and businesses.

The merged company will operate under the Vodafone brand initially, though both the Vodafone and Three brands may continue to exist in some form during a transition period. The combined entity becomes the UK’s largest mobile network by customer numbers and spectrum holdings, surpassing EE (BT Group) and O2 (Virgin Media O2).

What Changes for Existing Business Customers?

If You Are on a Vodafone Business Contract

• Your existing contract is fully honoured. Nothing changes to your pricing, data allowance, or terms until your contract naturally ends
• Coverage should improve. The combined network will have access to Three’s extensive 5G spectrum and additional mast sites, which should deliver faster speeds and better indoor coverage
• Account management continues. Your dedicated business account manager and support channels remain in place
• Annual price increase unchanged. The fixed competitive rates per month increase each April still applies

If You Are on a Three Business Contract

• Your contract terms are protected. Under CMA conditions, existing Three contracts must be honoured at current terms
• Branding will transition. Over time, Three branding will likely transition to Vodafone, but this will not affect your service or pricing mid-contract
• You may see improved infrastructure. Investment commitments made as part of the merger approval include network upgrades that benefit all customers
• Support channels may change. Business support may eventually consolidate under Vodafone’s business team, but this will happen gradually

The Supernetwork: What It Means in Practice

The combined Vodafone-Three network will have:

For business users, the most significant benefit is more spectrum combined with more mast sites. This means higher capacity (less congestion during peak hours), faster average speeds, and better indoor coverage — particularly in office buildings and warehouses where signal penetration has traditionally been weak.

Impact on Pricing

The CMA merger approval included conditions to prevent price increases beyond what would have happened without the merger. In practice, this means:

• Short term (2026–2027): Pricing is expected to remain competitive. The merged entity needs to retain customers from both networks and cannot afford to push prices up while customers have the option to switch to EE or O2
• Medium term (2027–2029): As the supernetwork matures and delivers genuinely better coverage and speeds, Vodafone may position the merged network as a premium alternative to EE. Business pricing could creep up for new contracts, but existing deals will continue under their agreed terms
• Multi-line discounts: The larger customer base gives the merged entity more flexibility to offer attractive multi-line business deals. If you are negotiating a new contract for 5+ lines, this is a strong negotiating position

Should You Stay, Switch, or Wait?

Stay if…

• You are happy with your current Vodafone or Three service and pricing
• You are mid-contract with no immediate need to change
• You want to benefit from the supernetwork improvements as they roll out
• Your business operates in areas where Three or Vodafone already have strong coverage

Switch if…

• You are out of contract and can get a better deal elsewhere
• You need rural coverage that EE handles better right now
• You want free EU roaming — O2’s Roam at Home (25 GB EU data + inclusive minutes and texts) is unmatched
• You are concerned about transition disruption and prefer stability on an established single network

Wait if…

• Your contract ends in the next 3–6 months and you want to see what post-merger deals emerge
• You are interested in the supernetwork benefits but want to see real-world performance data before committing

How to Negotiate the Best Deal Right Now

The merger creates a unique negotiating window for businesses:

1. Get competing quotes. Approach all four networks (or use a free comparison service like Compare The Networks) to get side-by-side pricing
2. Mention the merger. If you are negotiating with Vodafone or Three, make it clear you are considering EE or O2 as alternatives
3. Ask about loyalty incentives. Vodafone in particular is offering retention deals to keep business customers through the transition
4. Lock in current pricing. If you get a good deal now, a 24-month contract protects you from any post-merger price adjustments
5. Negotiate multi-line bundles. The merged entity has more capacity to offer aggressive multi-line discounts

Timeline: What Happens When?

Frequently Asked Questions

Will my Three number change?

No. Your phone number is portable and stays with you regardless of brand changes.

Can I leave penalty-free because of the merger?

Not automatically. The merger itself is not a contract change that triggers exit rights. However, if your terms or pricing change as a result, you may have the right to exit.

Should I avoid signing a new Three contract?

Not necessarily. If the deal is good, sign it — your terms are contractually protected for the full duration.

All prices exclude VAT. Fixed competitive rates/month annual price increase applies each April. Compare The Networks is regulated by OFCOM. Information about the Vodafone-Three merger is based on publicly available CMA rulings and network announcements as of March 2026.