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Business SIM-only deals

Shop and compare the UK’s best business SIM-only deals with exclusive contracts from EE, O2, Vodafone, and Three. Backed by 27+ years of independent advice and our 7-day price match promise. 

SIM-only deals

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Why UK businesses switch to SIM-only

Across our customer onboardings, the same patterns come up repeatedly: 

Bundled contracts hide the real cost

Handset financing is baked into the monthly bill – often equivalent to 30-40% interest over 24 months. Most businesses don’t realise until it’s pointed out.

Modern handsets last 4–5 years comfortably

The “upgrade every 24 months” cycle is rarely necessary – most business users don’t need a flagship camera to make calls, send emails, and run Teams.

Stop paying for upgrades you don't need

Switching to SIM-only lets businesses keep working devices and stop paying for handset upgrades they don’t need.

Corporate eSIM with BYOD (Bring your own device)

A corporate eSIM on a personal handset gives the business a dedicated work line — without provisioning a second device.

Cheaper than buying a fleet of work handsets

With proper MDM in place to keep work data separate, staff use their own phones with a corporate eSIM for calls and data — no second device, no procurement cost.

15 minutes with our team beats hours of comparison

UK specialist · no obligation call

How much UK businesses save with SIM-only

Recent customer switches from bundled contracts to SIM-only:

London Fintech firm cuts mobile bill by 59%

35 lines · Financial services

Migrated 35 lines from a bundled contract with significant out-of-bundle international charges to an EE Business SIM-only All Rounder plan. The SIM-only structure also absorbed previously volatile international call costs into a predictable fixed tariff.

£593

monthly saving

59%

cost reduction

£7,116

yearly saving

Engineering firm saves 45% on 12 lines

12 lines · Manufacturing

Engineering firm with operations across the UK, USA and Europe moved 12 lines to a 12-month SIM-only contract with 100GB data per SIM at £21/line. The shorter contract also avoided scheduled RPI inflation increases and decoupled their handset inventory from airtime renewal cycles.

£206

monthly saving

45%

cost reduction

£2,472

yearly saving

See what your business could save on mobile

We’ll model what SIM-only would save your business specifically.

What each network is best at 

Each of the four UK networks has different strengths. Our advice is to match the network to the team, not pick one network across the board. 

Cutout of EE Business SIM card deals with unlimited data

EE SIM only

Best for

Reliable nationwide coverage

  • Consistently leads RootMetrics rankings for UK network quality.
  • Best fit for field teams, healthcare, and businesses with rural or mixed-location staff.
  • Part of the BT Group – higher per-line cost reflects the coverage and reliability premium.

Avg/line after discount

£18.11
Cutout of Three Business SIM card only contract deal with Unlimited Data

Three SIM only

Best for

Unlimited data at lower cost

  • Strongest network for unlimited data at lower price points — no speed caps or data limits.
  • Best fit for data-heavy teams — sales staff travelling, hospitality running EPOS over mobile, or anyone using their phone as a primary internet device
  • Lowest average per-line cost of the four networks.

Avg/line after discount

£10.55
Cutout of Vodafone Business SIM only contract plan with Unlimited Data

Vodafone SIM only

Best for

International travel & roaming

  • Strong international roaming and consistent EU/global coverage.
  • Business roaming bundles tend to be more competitive than other networks.
  • Natural fit for executive teams, international sales, and any business with a meaningful travel footprint.

Avg/line after discount

£18.56
Cutout of O2 Business SIM only unlimited data contract

O2 SIM only

Best for

Flexibility & urban coverage

  • Flexible contract terms and the Inclusive Zone — free roaming-style data across designated countries.
  • Popular with businesses needing flexibility — staff turnover, seasonal hiring, or shorter commitment lengths.
  • Strong London and urban coverage.

Avg/line after discount

£12.79

Average per-line costs shown reflect our negotiated discounts. Actual prices vary by data tier, contract length and account size

Network comparison table

All four networks available on business SIM only contracts at businessmobiles.com

Swipe to compare networks →

How EE, Vodafone, Three and o2 compare for business SIM-only — coverage, speed, reliability and roaming.
Feature EE EE Vodafone Vodafone Three Three O2 o2
5G population coverage78%50%60%50%
Coverage checker EE Vodafone Three O2
*Overall 5G performance1st2nd3rd4th
*Median download speed (UK)89.9 Mbps49.9 Mbps44.9 Mbps29.0 Mbps
*Video download speed root scores85.983.777.475.7
*Overall reliability root scores91.785.381.276.7
🇪🇺 Inclusive EU roaming plans availableNoNoYesYes
🇪🇺 EU roaming daily charge£2.26 / day£2.25 / day£1.67 / day£2 / day
🌎 Inclusive world roaming availableNoNoYesNo
🌎 Rest of the world roaming charge£11.33 / month£5.71 / day£5 / dayFrom £5 / day
🌎 Rest of the world zone roaming 59 countries 100 countries 22 countries 92 countries

*RootMetrics Root Scores 2H 2024. More details

Best SIM-only plans by industry

Different industries make different decisions about networks, data tiers, and contract structure based on real usage patterns. Here’s how we typically advise, drawn from active accounts across our customer base:

Transportation and logistics

Coverage breadth matters more than peak speed whendrivers and field teams cover the whole country. National coverage and reliability tend to drive network selection. Vehicle trackers, route management apps, and dashcam upload all benefit from solid data allowances — though most teams use 20-50GB/line rather than unlimited, paired with M2M SIMs for in-vehicle hardware.

Typical set up
Contract length
36-month
Data tier
20–50GB
Account type
Multi-line accounts with M2M SIMs for vehicles

Healthcare

Reliability and indoor coverage are the deciding factors – staff need consistent signal across care facilities, hospitals, and patient visits. Dedicated work lines on SIM-only contracts pair well with BYOD policies where staff use personal devices, with eSIM increasingly the preferred setup. Data needs vary significantly: clinical staff use modest data; community-based teams using video consultations need
more.

Typical set up
Contract length
Mixed (24 & 36-month)
Data tier
Capped & unlimited mix
Account type
Multi-line, eSIM are preferred

Manufacturing

Site-based coverage matters most — manufacturing facilities are often in industrial estates where some networks underperform. Most manufacturing customers prioritise reliable connectivity for shop-floor and warehouse staff, plus office teams. Data usage tends to be modest (calls, email, internal systems). Contract length typically longer to lock in rates across larger headcount.

Typical set up
Contract length
36-month
Data tier
Capped, matched to actual usage
Account type
Multi-line with volume discounts (shop-floor + office)

Field engineering

Rural coverage is the deciding factor for engineers and trades teams working across mixed terrain. Data needs depend on whether the work involves diagnostics, photo/video upload, or just calls and messaging – but most field teams benefit from higher data allowances than office staff. 

Typical set up
Contract length
24–36 month
Data tier
Higher allowance (20GB+)
Account type
Multi-line, coverage-led for rural work

Hospitality & retail

Staff turnover means contract flexibility and easy line management matter as much as headline price. EPOS systems running over mobile, plus staff phones, plus pooled data across the team are the common pattern. 

Typical set up
Contract length
Flexible / shorter terms
Data tier
Pooled data across the team
Account type
Multi-line + EPOS SIMs, easy line management

Recruitment

High call volumes, modest data needs. Unlimited calls with a 10-20GB data tier typically beats unlimited data on cost. Office-based teams with occasional travel.

Typical set up
Contract length
24–36 month
Data tier
10–20GB with unlimited calls
Account type
Office-based, occasional travel

Financial services

Predictable monthly costs, compliance-friendly account management, and absorbing international call costs into fixed tariffs are the typical drivers. SIM-only structures decouple hardware procurement from airtime, simplifying both balance sheets and audit trails.

Typical set up
Contract length
Fixed-term
Data tier
Capped, international calls, fixed tariff
Account type
Multi-line, compliance-friendly management

When SIM-only makes sense (and when it doesn't) 

Honest advice after 26 years of selling business mobile contracts: 

SIM-only is the right choice when: 

SIM-only is the wrong choice when: 

When unlimited data is worth it

Field teams who stream video or upload large files. Hospitality teams running EPOS or POS systems over mobile data. Anyone using their phone as primary internet (mobile broadband, 5G routers for backup connectivity).

When pooled data beats unlimited

Office-based teams with mixed usage patterns. Heavy users get covered without paying per-line unlimited rates for light users. Most cost-effective for accounts of 10–50 users where individual usage varies significantly.

How long businesses keep phones

Across our customer base, the typical handset stays in service for 3–4 years — up from about 2 years a decade ago. Modern phones stay viable well past the standard 24-month contract.

What UK businesses actually choose

51%

Most accounts are small businesses scaling up

Over half (51%) of our customers have 1–2 lines, and 73% have 5 or fewer. The remaining 27% scale from mid-sized teams through to 100+ user corporate accounts.

£9/line

The bigger the team, the lower the cost

Average per-line cost drops from £27/line for accounts under 25 lines, to £17/line for 26–100 lines, and £9/line for 101+ user accounts. Multi-line discounts compound significantly at scale.

85%

Most customers commit to longer contracts to secure the best rates

85% of accounts choose 36-month terms, with 15% on 24-month contracts.

85%

Capped data plans are the standard choice

85% of customers select capped tiers matched to actual usage rather than defaulting to unlimited — most business users don't burn through enough data to justify the premium.

Top 3

Top industries served

Transportation, healthcare and manufacturing.

Customer statistics drawn from BusinessMobiles.com's internal CRM and order data, covering active UK SME accounts across 27+ years.

The trusted mobile provider for businesses across the UK

"BM have tailored my network & phone choices for myself & my company to suit our growing requirements from inception of 5-6 handsets to over 100."

Alexander Welch

TrustPilot

24 Feb 2026

"...Ricky actually saved us at least 40% on our bills which is a great saving for our business."

HSBM Facilities Management Ltd

Success story

24 Feb 2026

"BusinessMobiles have supplied our mobile contracts for over a decade - 45 SIMs now. Price has been great, and the service from Ricky and the support team nothing short of amazing"

John McCusker

Direct feedback

24 Feb 2026

SIM only business deals FAQS

Can’t find your answer? Our team has helped 20,000+ UK businesses. Book a free 15-minute call with a specialist.

What are the benefits of a business SIM Only plan?

Perhaps you’re happy with your mobile phone and have no intentions of switching?

Don’t tie yourself down. Choose one of our SIM Only business deals and continue on with your favourite phone.

Our plans include free delivery, alongside unlimited minutes, texts, and data.  

Why should I get a business SIM card?

There are many reasons why you should consider getting a SIM Only deal for your business, including the freedom and flexibility to upgrade 6 months early.

These plans also prove perfect for cutting company costs and offer a more effective alternative, especially for employees who ‘BYOD’

Enjoy the freedom of a personalised plan built around your needs – get in contact with our expert consultants today. 

Where can I get a 5G SIM Only business plan?

Look no further, your solution is here!

BusinessMobiles.com offer a selection of the best business SIM Only deals. All plans include unlimited data, texts, and minutes at the UK’s lowest prices, extending to 5G coverage. Just ensure you pick a business mobile with 5G compatibility!

Considering the best option for your business?
Get in contact with our team today & let us find your perfect plan. 

Which contract length is best for my business?

The total length of your plan depends on the agreed contract. This is between 12, 24 or 36 months.

Unsure of the best contract length for your needs? Discuss everything with our expert consultants and benefit from 22 years of industry expertise.  

We are always happy to help you find the perfect deal that your business needs – call 0808 189 1 943 today to learn more. 

What is the purpose of a dual SIM card?

In the busy world of business, we sometimes find our professional and personal lives crossing over.

By utilising a modern business mobile, swapping between the two is as simple as switching SIM. Easily send/receive calls and texts from a list of curated corporate contacts, or switch to your public profile after hours. 

Be prepared for every eventuality. With a modern business mobile, there’s no need to physically swap the card – just keep them both in and swap them through your phone’s operating system.

Want to learn more? Read our post on why you need an extra SIM card now. 

What can I do with an extra SIM?

Got an extra card and not sure what to do with it? Well, you can use it on your old phone and pass it to a colleague or family member, or you can use it on another smart device such as a laptop or tablet.

This allows you to have multiple active numbers on the same phone. Receive texts and calls from business contacts, or swap over to your personal card and talk to your family.

Can I use a phone SIM in a tablet?

Yes – they remain perfectly suitable for use in other devices, including iPads and other business tablets for work, 4G/5G routers and many more devices.

In 2018, users would have to purchase a special mobile broadband card to achieve this… Now it’s a standard!

Want to learn more? Read exactly what is a SIM card now! 

What else do you offer?

Our range extends far past our business SIM Only deals.

We offer a variety of options for your company, including iPhonesbusiness laptops, and accessories. Most importantly, we proudly maintain a superb service with competitive prices and a highly covered level of customer care.

Start browsing our range of Business Mobile Phone deals, with options from all major network providers.

Category updated 24 Aug 2026

Why choose businessmobiles.com

Our difference

Business mobiles made genuinely easy

Same networks, completely different experience. With a named account manager, unbiased advice, and support that deals with the networks so you don’t have to.

Range of different business mobiles
📈 About our data 

Customer statistics drawn from BusinessMobiles.com’s internal CRM and order data covering active UK SME accounts. Figures rounded for readability. For full methodology, Contact Our Team

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