Best Business Mobile Sim-Only Plans UK 2026: Compare Providers, SIMs, Handsets & Team Deals Quick answer
Business SIM-only deals give UK companies calls, texts and mobile data without paying for a new handset. They are usually cheaper and more flexible than full business phone contracts, making them ideal for sole traders, start-ups, SMEs and teams that already have suitable devices.
In 2026, the best business SIM-only deal depends on your data usage, network coverage, roaming needs, contract length and team size.
For most UK businesses:
EE is best for premium UK coverage, speed and mobile performance.
Vodafone is best for flexible business SIM plans, roaming and scalable team packages.
O2 is best for small business value and EU travel.
Three is best for high-data and unlimited-data SIM-only deals.
Managed business mobile providers are best if you want support, multi-network advice and centralised billing.
Best overall for UK performance: EE
Best for flexible business SIMs: Vodafone
Best for EU roaming: O2
Best for unlimited data: Three
Best for managed support: Daisy, Gamma, Spitfire, FluidOne or Focus Group
Compare Sim-Only Mobile Plans & Save Up To 40%
Business Mobile Phone Cost Calculator UK Estimate your monthly business mobile phone costs based on users, SIM-only or handset plans, data allowance, roaming, security features and contract length.
Plan type
SIM-only Handset contract Mixed SIM-only and handset plans SIM-only is usually cheaper; handset contracts include device cost.
Data allowance per user
Low: 5GB or less Standard: 10GB–30GB High: 50GB–100GB Unlimited data Field staff, tethering and video calls usually need more data.
Handset level
No handset needed Budget handset Mid-range handset Premium handset Mixed handset types Only affects cost if you choose handset or mixed plans.
Need international roaming?
No EU roaming Global roaming Useful for sales teams, directors and frequent travellers.
International calls from the UK?
No Occasionally Regularly Can affect bolt-ons and plan choice.
Need shared data?
No Yes Shared data can help teams avoid paying for unused individual allowances.
Need mobile security / device management?
No Basic security Advanced MDM / device management Useful for company phones, remote wiping and staff device control.
Network requirement
Standard business mobile plan Premium network / priority support Rural or coverage-sensitive locations Multi-network / specialist coverage need Coverage matters if staff travel or work on-site.
Contract length
Monthly rolling 12 months 24 months 36 months Longer contracts may reduce monthly cost but increase commitment.
Your estimated business mobile phone costs
Estimated monthly cost
£0
Potential monthly saving
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Enter your business mobile requirements to estimate your monthly cost.
Recommendation will appear here.
This calculator is an estimate only. Actual business mobile costs vary by network, coverage, handset, data allowance, roaming, call usage, contract length, VAT, price rises, credit checks and supplier terms.
Contents
Best Sim-Only Mobile Phone Plans
Sim-Only vs Handset Plans for Businesses
Best business mobile phone plans by provider
Business mobile plan types explained
How much data does a business mobile user need?
How do we work?
Transparent, impartial, and data‑driven reviews made by a team of expert humans, never AI generated – here’s exactly how Compare Your Business Costs helps you find the best deals from trusted UK providers: click here
Authored by: Ally Cox (Business Technology & B2B Services Specialist 10+ Years’ Experience)
Reviewed by: James Ward (Telecoms Specialist, 12+ Years Experience)
Last Updated: July 2026
Comparing business mobile deals for your team?
If you need SIM-only plans, handsets, shared data, roaming or multiple staff connections, compare business mobile quotes below.
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Best Business Sim-Only Deals at a glance
Provider Best for SIM-only options Key strengths Watch out for
EE
Premium coverage, speed and field teams
Data allowances from 1GB to unlimited, with unlimited UK minutes and texts
Strong network performance, 5G, Stay Connected Data, annual check-ups and extended warranty included on business mobile plans
Often more premium-priced than value-led networks
Vodafone Business
Flexible plans, roaming and scalable business packages
Unlimited data, calls and texts with flexible contracts and tailored plans
Good for growing teams, international use and businesses wanting add-ons
Plan structures and extras can be more complex
O2 Business
Small businesses, sole traders and EU travel
Small Biz SIM-only tariffs with UK-to-EU minutes/texts on selected plans
Good value, EU roaming position and O2 Priority perks
Customer service and complaint feedback should be checked
Three
High-data users and unlimited data
3GB, 25GB, 80GB, 500GB and Unlimited Data plans listed
Strong value for data-heavy users, hotspot use and mobile-first teams
Coverage and roaming need careful checking
Managed providers / resellers
Businesses wanting help comparing multiple networks
Multi-network SIMs, account-managed deals and telecoms bundles
Useful for billing, support, team management and advice
Pricing is usually quote-based
EE says its business SIM-only phone plans include unlimited UK minutes and texts, with data allowances from 1GB a month to unlimited. Three currently lists business SIM-only plans including 3GB, 25GB, 80GB, 500GB and Unlimited Data.
Key Takeaways
Business SIM-only plans are usually cheaper than handset contracts because you are not paying for a new phone.
SIM-only is best if your business already owns compatible devices or staff use company-approved phones.
EE is a strong first choice for coverage, speed and premium UK performance.
Vodafone is strong for flexible business SIMs, scalable team plans and roaming.
O2 is good for small businesses that value EU travel and simpler tariffs.
Three is one of the strongest options for high-data and unlimited-data business SIMs.
Three lists 1-month and 12-month business SIM-only options, including Unlimited Data, 500GB, 80GB, 25GB and 3GB.
O2’s Small Biz SIM-only tariffs include UK-to-EU minutes and texts on selected data allowances.
Vodafone says its business SIM-only deals include unlimited data, calls and texts with flexible plans tailored to business needs.
Which business mobile plan is best for your business?
Business need Best provider to compare first Why
Best UK speed and performance
EE
Strong network positioning and business plans for small teams
Best flexible business plans
Vodafone
Build-your-own plan structure, contract options and add-ons
Best for EU roaming
O2 or Vodafone
Both have strong roaming propositions for business users
Best for unlimited data
Three
Strong high-data and unlimited-data SIM options
Best for small teams
EE, O2 or Three
Good SIM-only and handset options for SMEs
Best for larger teams
Vodafone or managed reseller
More scalable plans and account management options
Best for mobile workers
EE or Vodafone
Strong choices for field teams and remote staff
Best for managed support
Daisy, Gamma, Spitfire, Focus Group or FluidOne
Better for businesses needing advice, support and telecoms bundling
Our verdict: c
What is a business SIM-only deal? A business SIM-only deal gives your company a SIM card with a monthly allowance for calls, texts and mobile data, without including a new handset, which means you can:
keep your current phone
use company-owned handsets
reduce monthly costs
add or remove users more easily
manage business mobile bills separately
compare data and roaming packages without paying for devices
SIM-only plans can be used for smartphones, tablets, mobile routers and connected devices, depending on the provider and plan.
Who should choose a business SIM-only plan?
Business type
Sole traders
Keeps costs lower and separates business calls/data from personal usage
Start-ups
Avoids high handset costs while still giving staff business mobile access
SMEs
Makes it easier to manage multiple users under one business account
Field teams
Gives mobile data for maps, job apps, CRM and communication
Remote workers
Useful for mobile hotspots and backup connectivity
Businesses with existing handsets
Avoids paying for phones you do not need
Temporary teams
Shorter SIM-only terms can be more flexible than handset contracts
Our verdict:
Best sim-only business mobile phone plans by provider EE Business Mobile
EE is usually the best provider to compare first if your business prioritises speed, coverage and UK network performance.
EE says its business SIM-only plans come with unlimited UK minutes and texts, with data options from 1GB to unlimited. EE also says business mobile plans include Stay Connected Data, annual check-ups and extended warranty as standard.
Best for:
field teams
tradespeople
sales staff
delivery teams
mobile workers
businesses relying on mobile data
Pros
Strong UK network reputation
5G business SIM options
Data allowances from light use to unlimited
Unlimited UK minutes and texts
Good for business-critical mobile use
Cons
Can cost more than Three or O2
May be more than light users need
Roaming and annual price-rise terms should be checked
Compare EE Business Mobile Deals
Vodafone Business Mobile
Vodafone is a strong business SIM-only option for companies that want flexibility, roaming and scalable plans.
Vodafone promotes business SIM-only deals with unlimited data, calls and texts, plus flexible business SIM-only plans tailored to needs. Its wider business mobile plans are positioned for small, medium and large businesses.
Best for:
growing SMEs
larger teams
international travel
flexible contracts
businesses wanting add-ons
companies with changing mobile needs
Pros
Flexible business plan structure
Good for scaling teams
Roaming options
Unlimited data options
Wider business telecoms support available
Cons
Plans and add-ons can be more complex
Not always the cheapest for light users
Exact pricing depends on package and contract
O2 Business Mobile
O2 is often a good option for sole traders, small businesses and teams that value EU travel and small business-friendly tariffs.
O2 says Small Biz SIM-only tariffs with 20GB–50GB include 500 UK-to-EU minutes and texts, while Small Biz SIM-only Unlimited includes 2,000 UK-to-EU minutes and texts.
Best for:
sole traders
small businesses
EU travel
value-focused SMEs
businesses wanting O2 Priority perks
teams that do not need ultra-premium support
Pros
Good small business positioning
EU-friendly allowances on selected tariffs
O2 Priority perks
Familiar UK network
SIM-only and handset options available
Cons
Customer service reviews can be mixed
Not always the fastest network option
Businesses should check annual price-rise and roaming terms
Compare O2 Business Mobile Deals
Three Business Mobile
Three is one of the strongest providers for high-data and unlimited-data business SIM-only deals. Three lists business SIM-only plans including 3GB, 25GB, 80GB, 500GB and Unlimited Data, with unlimited UK texts and minutes. It also offers 1-month and 12-month plans.
Three also offers multibuy unlimited business SIMs for up to 50 SIMs, with roaming options available.
Best for:
high-data users
hotspot use
mobile workers
tradespeople
start-ups
price-sensitive SMEs
Pros
Large data allowances
Unlimited data options
1-month and 12-month SIM options
Good for hotspot and mobile-first working
Multibuy unlimited SIM deals available
Cons
Coverage varies by area
Roaming may cost extra
Businesses should check signal before moving multiple users
Compare Three Business Mobile Deals
Business mobile plan types explained
Plan type Best for Pros Cons
SIM-only business plans
Businesses with existing phones
Lower monthly cost, flexible, easy to scale
Business handset contracts
Teams needing new iPhones, Samsung or Google devices
Spreads device cost, simple procurement
Higher monthly cost and longer commitment
Unlimited data plans
Field teams, hotspot users and heavy mobile workers
Removes data worries
Can be wasteful for light users
Data-only SIMs
Tablets, routers, backup internet and connected devices
Good for mobile broadband and devices
Usually not for voice calls
Multi-SIM / team plans
Businesses with several staff
Easier billing and account management
Contract terms need checking
Managed business mobile
Growing SMEs and larger teams
Support, account management and multi-network advice
Business SIM-only deals by data usage
Best for Typical users
1GB-5GB
Light business use
Calls, texts, email and occasional browsing
10GB-25GB
Standard business users
Email, CRM, maps, messaging and light Teams calls
50GB-80GB
Mobile workers
Field apps, video calls, file uploads and regular cloud use
100GB-500GB
Heavy mobile use
Hotspot use, remote working, travel and large files
Unlimited data
Mobile-first teams
Staff using mobile data as a primary connection or backup broadband
Our vie
1-month vs 12-month vs 24-month business SIM contracts
Contract type Best for Pros Cons
1-month rolling
Temporary staff, contractors and flexible teams
Easy to change or cancel
Usually costs more per month
12-month SIM-only
Most small businesses
Good balance of price and flexibility
Less flexible than rolling monthly
24-month SIM-only
Stable teams wanting lower pricing
Can reduce monthly cost
Harder to switch if coverage or needs change
Managed multi-SIM contract
Growing teams
Easier billing and support
SIM-only vs handset contracts
Option Best for Pros Cons
Business SIM-only
Businesses with existing phones
Lower monthly cost, flexible, easy to scale
Business handset contract
Teams needing new phones
Spreads cost of iPhones, Samsung or Google devices
Higher monthly cost and longer commitment
Data-only SIM
Tablets, routers and connected devices
Useful for mobile broadband and field devices
Not suitable as a normal phone plan
Managed mobile plan
Larger teams
Support, account management and central billing
May cost more than direct SIM-only
What should you compare before choosing a business sim? Coverage
Check signal at your office, staff homes, client sites, routes, rural areas and event locations. The cheapest SIM is poor value if your team cannot get reliable signal.
Data allowance
Do not pay for unlimited data if users only need email and calls, but do not under-buy if staff use hotspots, Teams, maps, CRM or file uploads.
Roaming
Check EU roaming, worldwide roaming, fair usage limits, daily charges and whether calls from the UK to EU are included.
Contract length
Shorter terms are safer for temporary teams, while longer contracts may reduce monthly costs.
Support
Small teams may be fine with direct network support. Larger businesses may prefer a managed provider or reseller.
Annual price rises
Check annual price-rise terms before signing, especially for 24-month contracts.
Multi-SIM billing
If you manage several users, check whether the provider offers central billing, usage controls, spend caps and easy SIM management.
SIM-only vs handset plans: which is better?
Option
Best for Choose it if…
SIM-only
Lowest monthly cost
Your team already has suitable phones
Handset contract
New devices
You want to spread the cost of phones
Unlimited data SIM
Mobile workers
Staff rely heavily on mobile data
Data-only SIM
Tablets and routers
You need mobile broadband for devices
Managed mobile plan
Growing teams
You want support and centralised billing
Our verdict:
Business SIM-only deals for sole traders Business SIM-only plans can be a good fit for sole traders because they help keep business and personal use separate.
A sole trader may want a business SIM-only plan if they:
use their phone for client calls
want business VAT invoices
claim mobile costs as a business expense
need a separate business number
use data for maps, jobs, apps or card payments
want a professional setup without buying a new phone
O2, Three, Vodafone and EE all have SIM-only options worth comparing for sole traders.
Business SIM-only deals for teams For teams, the best SIM-only plan is not always the cheapest single-user deal, and you should compare:
number of SIMs needed
shared or individual data allowances
central billing
contract length
user controls
roaming requirements
replacement SIM process
spend caps
business support
Three offers multibuy unlimited business SIMs for up to 50 SIMs, while Vodafone and EE both provide scalable business mobile options for teams.
Business SIM-only deals vs personal SIM-only deals Business SIM-only deals are not always cheaper than personal SIMs, but they can be better for business use.
Business billing and VAT invoices
Usually cheaper for individual users
Central account management
Multi-SIM options
Business support options
Easier to separate business use
Can blur personal and work usage
More suitable for teams
Our verdict: best business SIM-only deals UK Business SIM-only deals are usually the best value option for UK businesses that already have phones and want to keep monthly mobile costs down.
Choose EE if coverage, speed and performance matter most.
Choose Vodafone if you want flexible SIM plans, roaming and scalable team options.
Choose O2 if you are a sole trader or small business that values EU travel and small business tariffs.
Choose Three if you need large data allowances, mobile hotspot use or unlimited data.
Choose a managed business mobile provider if you need support, billing help or multi-network advice.
Overall, most businesses should compare at least EE, Vodafone, O2 and Three before choosing a SIM-only plan. Businesses with several users should also compare managed providers and resellers.
Comparing business mobile deals for your team?
If you need SIM-only plans, handsets, shared data, roaming or multiple staff connections, compare business mobile quotes below.
Compare Business Mobile Quotes
FAQs What is a business SIM-only deal?
A business SIM-only deal gives your company calls, texts and mobile data without including a handset. It is usually cheaper than a full business mobile phone contract if you already have devices.
What is the best business SIM-only provider in the UK?
The best provider depends on your needs. EE is strong for coverage and speed, Vodafone for flexibility and roaming, O2 for small business value, and Three for high-data and unlimited-data plans.
Are business SIM-only deals cheaper than handset contracts?
Yes, usually. SIM-only deals do not include a phone, so monthly costs are normally lower than handset contracts.
Can sole traders get business SIM-only deals?
Yes. Sole traders can usually apply for business SIM-only deals, although eligibility checks vary by provider.
Which business SIM-only provider has unlimited data?
EE, Vodafone and Three all offer unlimited data options. Three is especially worth comparing for high-data and unlimited-data business SIMs.
How much data does a business SIM need?
Light users may need 1GB–5GB, standard users usually need 10GB–25GB, and field workers or hotspot users may need 50GB, 80GB, 500GB or unlimited data.
Can I use a business SIM in my own phone?
Yes, if your phone is unlocked and compatible with the provider’s network. Check device compatibility before switching.
Can I keep my business number when switching SIM?
Yes. You can usually keep your number by requesting a PAC code from your existing provider and transferring it to your new business SIM.
Do business SIM-only deals include roaming?
Some do, but roaming terms vary. Check EU roaming, worldwide roaming, daily charges, fair usage and whether calls abroad are included before signing.
Is a business SIM-only plan tax deductible?
Business mobile costs may be tax deductible if they are used for business purposes. The exact treatment depends on your business structure and personal use, so check with an accountant if needed.
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Hi, I’m Ally Cox , a senior copywriter and blogger at CompareYourBusinessCosts.co.uk, the UK’s trusted platform for comparing business services.over a decade of experience in the B2B sector, I specialise in simplifying complex topics like leased lines, VoIP, business energy, HR and payroll solutions, accounting software, and EPOS systems .HR, copywriting, and business operations- from clocking-in systems to card machines and office technology .informed, confident decisions when choosing products and services that improve efficiency and save money.
