Three vs Vodafone for Business After the Merger: Which Should You Pick?
Three vs Vodafone for Business After the Merger: Which Should You Pick?
Last updated: April 2026
Vodafone UK and Three UK are now the same company. They share infrastructure, they share coverage, they share an owner, and they will eventually share a single product line. But in 2026, they still have separate business contracts, separate pricing, separate customer service teams, and separate roaming products.
So why would anyone pick Three over Vodafone (or vice versa) when the network underneath is identical?
Because the brands themselves are different in ways that genuinely matter. The pricing structure is different. The roaming structure is different. The plan flexibility is different. The customer experience is different. The bundled extras are different. And the kind of buyer each brand is built for is different.
Here is how to think about it.
What Is Actually Shared (and What Is Not)
The merger created VodafoneThree, a single company that owns and operates both brands. Both networks now share the same physical infrastructure where the integration upgrades have rolled out. Three SIMs use Vodafone masts where they have stronger signal, and vice versa, with no extra cost and no setup needed.
That means coverage is no longer a reason to pick one brand over the other. In 2026, they deliver the same coverage at the same address. The historic Three argument ("great prices but worse signal") does not hold anymore.
What is still separate is everything in front of the network. The brand identities, the consumer-facing pricing, the contract terms, the customer support teams, the billing systems, the roaming products, the bundled extras, and the account management style. These will all eventually merge into a single product line, but it has not happened in 2026 and probably will not for at least another year.
That is the gap where the real choice lives.
Pricing: How They Differ
Three is priced more aggressively at the small-and-medium business end. List pricing on Three Business plans is consistently lower than Vodafone Business equivalents on the same line counts and same data tiers. The brand has built its identity on being competitive on price, and that has carried through into the post-merger product range.
Vodafone is priced for the large-corporate end. Vodafone Business plans are typically more expensive on the headline number, but the network's account management invests heavily in negotiated deals for big multi-line contracts. If you have 100+ lines and a procurement team, Vodafone will often discount aggressively to win the deal. If you have 10 lines and you are buying off the shelf, the headline price is what you pay.
The lists overlap in the middle, around 20-50 lines, where neither brand is obviously cheaper than the other and the choice comes down to other factors.
Roaming: The Real Difference
This is where the two brands diverge most clearly, and it is the area where most business buyers should pay attention.
Three's Inclusive Roaming structure is genuinely good. There are three tiers (Europe, Around the World, Around the World Extra), covering 49, 71 and 163 destinations respectively. You can mix tiers across SIMs, so different people in your business can be on different roaming plans. The pricing is per-SIM and per-month, which means you only pay for roaming on the lines that travel.
Vodafone's roaming is bundled differently. Some Vodafone Business plans include EU roaming as part of the headline tariff. Others do not, and you add it as a paid bolt-on. Worldwide roaming is a separate add-on with its own pricing. The structure is less predictable and harder to mix per SIM.
For a business with worldwide travellers, Three's Inclusive Around the World Extra plan is the best in the UK market right now. Vodafone does not have an equivalent product, although they will quote you something on a corporate negotiation if you push.
For a business with only European travel, both brands work fine, but Three is usually slightly cheaper if you only need one or two lines on roaming.
Plan Flexibility
Three's plans are SIM-by-SIM by default. You can run a 20-line account with 6 lines on unlimited, 8 on capped, 4 data-only, 2 in IoT routers, all on different roaming tiers, and the system handles it without any negotiation. The mix-and-match is built into the product.
Vodafone offers similar flexibility on negotiated corporate deals but the off-the-shelf small business plans are more "one-size-fits-most" than "build your own." For a 10-line account that needs different tariffs across users, Three is the easier path.
Customer Service
Two separate teams, two separate ticketing systems, two separate billing portals. The merger has not collapsed these and probably will not for years.
Some buyers prefer Vodafone's enterprise account management style. They want a named account manager, a quarterly review, and a relationship that survives staff changes. Vodafone delivers that for medium and large customers.
Other buyers prefer the simpler structure of Three. Less ceremony, faster turnaround on routine changes, less paperwork. Three delivers that for small and medium customers.
Personal preference. Neither is objectively better. It depends on whether you want a relationship-led account or a transactional one.
The bigger improvement, regardless of which brand you pick, is buying through a partner who can chase tickets for you. We do that for both brands at Compare The Networks, and it tends to be the biggest single source of customer satisfaction in our reviews.
Bundled Extras
Vodafone tends to pile more bundled extras into corporate deals: cloud storage, security software, fleet management portals, sometimes even free hardware for big contracts. Three keeps it simpler: the SIM, the data, the support, with the extras priced separately if you want them.
Whether you value the bundled extras depends on whether you would actually use them. If your finance team is comparing total package value, Vodafone often looks better on the spreadsheet. If you only need a phone contract and you do not want to pay for things you will not use, Three is cleaner.
The Brand Itself
Sounds silly but it matters. Vodafone is a brand that is comfortable for big-company buyers and finance teams. It has the heritage, the FTSE listing, the global presence, the corporate respectability. Internal sign-off for a Vodafone contract is easy because nobody questions the choice.
Three is a brand that is comfortable for mid-market and SMEs. It is the cheaper, more aggressive, less corporate alternative. For some buyers that is a feature. For others, especially in regulated industries with conservative procurement, the brand feels less serious.
The contract works the same way either way. The perception affects internal politics and renewals more than the actual experience.
So Which Should You Pick?
Pick Three if you...
- Are a small or mid-sized business looking for the best list price
- Have worldwide travellers and want the simplest, most generous roaming structure
- Want plan flexibility to mix tariffs across SIMs without negotiation
- Do not need bundled extras and would rather pay less per month
- Like Three's heritage of unlimited data plans
- Want an Approved Business Partner channel (we are one)
Pick Vodafone if you...
- Are a large corporate with 50+ lines and an existing relationship
- Want bundled enterprise extras included in the contract
- Are negotiating a multi-product deal that includes fixed line and cloud services
- Have a finance team that already has Vodafone on the approved supplier list
- Specifically need Vodafone's enterprise account management style
- Prefer the brand for internal political reasons
Common Scenarios
10-line business in Birmingham, mostly office-based, occasional EU trips.
Three. Cheaper, the coverage is identical post-merger, plan flexibility means you only pay for roaming on lines that need it.
50-line business across 6 sites including some rural locations.
Run a comparison. Coverage is identical now so it comes down to total cost of ownership over 24 months. Three usually wins on list price but a Vodafone account manager might come back with something competitive on a negotiated deal.
200-line corporate, finance-led procurement.
Vodafone, probably. Easier internal sign-off, bundled extras, structured account management. Do not skip getting a Three quote anyway, the negotiation leverage matters.
Field service business with engineers all over the UK and EU.
Three. The Inclusive Roaming structure is genuinely better than Vodafone's for this use case, and the per-SIM flexibility lets you only pay for roaming on the engineers who travel.
Small consultancy with 5 people, no travel, mostly UK office work.
Three on price, or O2 if you want EU roaming included by default. Vodafone is overpaying for what you actually need.
What Happens When the Brands Merge
Eventually, Vodafone and Three will collapse into a single product line under one brand. That has not happened yet and probably will not before 2027 at the earliest. When it does, everything we have written above goes out the window. Until then, the choice between brands is real and the differences are worth understanding.
If you are signing a 24-month contract today, you will likely renew before the brands fully merge. So make the right call for your situation right now and re-evaluate at renewal.
The CTN View
We sell both. We are a Three Approved Business Partner specifically because Three's pricing is consistently the best in the small-to-mid market and the brand has invested in partner channels. We also quote Vodafone (and O2 and EE) on every comparison because sometimes another network is the right answer.
For most of the SMEs we serve, Three wins more often than the other three combined. Not because of any partnership bias, but because the maths usually favours Three for businesses our typical size. For larger corporates or specific industry requirements, the answer flips.
Tell us about your business and we will run the comparison properly.
Frequently Asked Questions
Q: Is there any difference in coverage between Three and Vodafone now?
No. Both brands use the same combined network. Coverage is identical at any given address.
Q: Will my Three contract become a Vodafone contract automatically?
No. Your contract stays on the brand you signed up with. The merger affects the network, not the paperwork.
Q: Can I switch from Three to Vodafone (or vice versa) without porting my number?
You are technically changing brands within the same parent company, but you still need to port. There is no easy switch product yet.
Q: Are there any cheaper sub-brands worth knowing about?
SMARTY (Three) and Voxi (Vodafone) are pay-as-you-go consumer brands. They are cheaper than the main business contracts but they are not designed for business use and they do not come with business support.
Q: Which has better customer service?
Both have good and bad reviews. Buying through a partner like CTN insulates you from going direct, which is usually the bigger improvement than picking between the two brands.
Q: Do I save money if I buy Three through a partner instead of direct?
Often yes, because partners have access to channel pricing that is not on the public website. We get our clients better deals than the Three website most of the time.
Q: What happens at the next contract renewal?
You can renew on the same brand, switch to the other brand, or look at other networks entirely. We help with all three at renewal time.
Q: Does the £11 billion merger investment benefit Vodafone customers as much as Three customers?
Yes. The investment goes into the combined network, which both brands use. Both sets of customers benefit equally.