Business Mobile SIM Deals

Browse our SIM Only deals & get the best value for business.

UK Mobile Business SIM

CLI Secure, we provide businesses with the most affordable mobile plans to suit their unique requirements, using the UK’s top mobile networks. Our mobile SIM-only offers are designed to provide cost-effective solutions for your business needs, helping you save money while enjoying the best possible mobile services.

UK Mobile Business SIM Plans

O2 Unlimited

All In One (O2) - Unlimited Promo***
£ 16
90 +VAT Monthly
  • Unlimited Data
  • Unlimited Minutes
  • Unlimited Texts
  • World Travel Select (WTS)

*** Limited time offer, available until further notice. Fair Usage policies apply. Available for new business only. Moves from Distribution will not be eligible for the promotional version of the tariff.

^ To ensure best price on this tariff, please see Unlimited Promo, available until further notice.

Vodafone Unlimited

VSELUN23 Vodashare Eco Unlimited S23
£ 24
90 + VAT Monthly
  • Unlimited Data**
  • Unlimited Minutes
  • Unlimited Texts
  • TravelFree◊

** Inclusive standard allowances are available for use in UK, EU and in selected worldwide destinations in line with qualifying daily roaming services.

◊ Unlimited plans roaming data usage is capped at 25GB per billing month in European Travel Select, Travel Free and Travel Plus destinations

5g SIM Deals
Unlimited Calls & Texts

Communicate more with our business SIM Only contracts that come with unlimited minutes and texts included in the plan. Choose the data package that suits your business connectivity requirements and stay connected with your team hassle-free!

5g SIM Deals
Multi-SIM Discount

Looking to use multiple devices for your business? Our business SIM Only plans offer discounted prices starting from just £7.50 per month. Get in touch today for free advice on the best plan to suit your needs.

5g SIM Deals
5G Ready

Experience the benefits of unlimited data and 5G network access without any additional charges, all included in our business SIM Only plans. Keep in mind that a 5G compatible device is necessary and coverage may vary depending on location.

5g SIM Deals
Custom Data Plan

Discover the ideal data package for your enterprise requirements – select from a range of data options including 2GB, 40GB, 60GB, 140GB and Unlimited Data; all with inclusive free calls and minutes. Enhance your plan with additional features like roaming, international minutes, and more.

Which Network is Best for Your Business?



O2 is a top-performing mobile network provider with excellent features, including FREE international roaming and 99% coverage in the UK. They have received multiple awards and are considered a highly secure network, with a recent achievement of CAS(T) certification.



If you're located in London, consider Vodafone for one of the best 5G networks in the city. In fact, Vodafone was voted "London's Best 5G Network" in 2022. With excellent nationwide coverage, Vodafone offers a variety of great deals across different plans.

Business Mobile SIM Only Deals

  • Discover our range of business SIM-only deals designed to meet the needs of small, medium, and larger businesses, offering unbeatable value for your mobile phone calls without requiring you to switch phones.
  • Our SIM-only deals operate on the UK’s leading business mobile network, ensuring reliable and uninterrupted coverage for your business needs.
  • Transferring your existing number to us is a breeze thanks to our straightforward and streamlined porting process.
Check O2 coverage

O2 Network Map

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Check Vodafone coverage

Vodafone Network Map

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Use Ofcom checker

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Common Questions

Most Popular Questions

Business SIM deals are mobile phone plans designed specifically for businesses, providing cost-effective ways for companies to manage their mobile phone needs.

Business SIM deals are suitable for all types of businesses, whether you are a small startup or a large corporation. They offer flexible options tailored to meet the unique needs of each business.

Business SIM deals offer a range of benefits, including cost-effective calls, texts, and data plans, unlimited data packages, discounted prices for multiple devices, and the latest 5G network access.

  • Business SIM deals are designed to meet the specific needs of businesses, offering features such as multiple device discounts, flexible end dates, and tailored data plans. They also often offer dedicated account management and customer service.

Switching to a Business SIM deal is a simple and quick process. You can easily port your existing number to the new plan and align all of your contracts to have the same end date.

Business SIM deals are available on the UK’s leading business mobile networks, including Vodafone and O2, and offer excellent nationwide coverage and network reliability.

How it works

Easily switch IT providers, from others to CLI Secure.

We guarantee a seamless migration with no downtime, even if you are currently working with another IT vendor. Onboarding with CLI Secure is as easy as 1, 2, 3…

Step 1
Get free It audit
Get Free IT Consultancy​

Let one of our experts examine your infrastructure and let's discuss the infrastructure deficiencies or the places we need to improve after the free audit.

It Support contract
Choose IT Support Packages​

Our flexible IT support packages can be tailored to fit businesses of all sizes, whether you need basic monitoring or a comprehensive IT management solution.

Step 2
Let us handle everything else
Let us handle everything else

Let's start managing your IT infrastructure and support. We'll follow your projects and improvements closely - you're in safe hands.

Step 3


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