Get the best SIM deals for your business with this guide. We'll show you which contracts offer SIM cards and data for your existing equipment, while also providing the features you need.
If you're thinking of signing up for a SIM-only contract with one of the UK's mobile phone operators, be sure to check out our top picks. We've combed through all the available deals from the four major networks in the UK, and here are our favorites – in no particular order – for businesses of all sizes.

Compare business SIM only deals by Industry Experts UK
Compare Business SIM only deals and stay connected with ultrafast 5G and 4G plans with unlimited text, data and minutes for mobile and tablet.
Deals | Network | Package | Text SMS | Calls MINS | Data GB | Contract |
---|---|---|---|---|---|---|
O2 Business SIM only Deal 1 | o2 | O2 Business 5GB | UNLIMITED | UNLIMITED | 5 GB | 30 days |
O2 Business SIM only Deal 2 | Vodafone | VF Unlimited | UNLIMITED | UNLIMITED | 20 GB | 30 days |
Vodafone Business SIM only Deal | 02 eSIM | O2 Business 5GB | UNLIMITED | UNLIMITED | 20 GB | 30 days |
02 eSIM Business SIM only Deal 1 | 02 eSIM | O2 Business 5GB | UNLIMITED | UNLIMITED | 20 GB | 30 days |
02 eSIM Business SIM only Deal 2 | 02 eSIM | O2 Business 5GB | UNLIMITED | UNLIMITED | 5 GB | 30 days |
Best business SIM only deals in UK
Vodafone - Affordable SIM Only Deal Around High Data User

(Image create to: Vodafone)
Vodafone's Red bundle, which is a 12-month contract, is the best deal in the UK. Unlimited data and minutes are available in both the UK and the EU. You also get 20GB data with 4GB in Europe in 40 countries. However, you can opt for World Traveller to make your allowance go to 58 additional countries around the world for just five pence per day. Vodafone offers a 30-day money back guarantee.
EE - Best SIM Only Plan for High Minutes Talktime User

(Image create to: EE)
O2 may win in versatility, but EE is close to the top regarding value for money. Although it is cheaper than its main competitor, it offers the same core features (unlimited text and data, but less data at 10GB). EE has also increased its network speed to superfast 4GEE. You can also share your plan with up to three colleagues on one bill. Note that, unlike many other competitors, tethering, as well as VOIP, are permitted.
Virgin Media Business - Best SIM Only Plan for High Data & Internet User

(Image create to: Virgin media)
If you are looking for mobile SIM-only services that come with broadband, the Big Data offered by VMB is worth considering. The infrastructure of EE underpins the mobile service and, like Co-op, provides unlimited minutes and text. You can save PS2 monthly on your SIM package by opting for VMB's Managed Internet Access. Unfortunately, there are no shared packages for teams.
O2- Best SIM Only Plan for International Call User

(Image create to: O2)
Telefonica's company owns one of the best plans in the lineup. You have unlimited minutes and texts across Europe and the UK (well, there's a fair usage limit at 2K minutes and 2K texts in Europe), and you get 3GB to use within the EU and 100 minutes from the UK to the EU. So it is great if you frequently travel to Europe. O2 also offers a 30-day option contract that costs an additional PS2 per month.
BT- Best SIM Only Package for High Budget User

(Image create to: BT)
BT now owns EE, but the former is still more value-for-money than the latter. You have the option to increase your 4G speed up to 60 Mbps for PlayStation4 per month. In addition, you'll get access to five million BT Wi-Fi hotspots. The data package has been increased by 20%, from 10GB monthly to 20GB without additional charges!
1. O2 Business SIM only Deal 1

Network o2
Package
O2 Business 5GB
Text SMS UNLIMITED
Calls MINS UNLIMITED
Data GB 5 GB
Contract 30 days
2. O2 Business SIM only Deal 2

Network o2
Package
O2 Business 20GB
Text SMS UNLIMITED
Calls MINS UNLIMITED
Data GB 20 GB
Contract 30 days
3. Vodafone Business SIM only Deal:

Network Vodafone
Package
VF Unlimited
Text SMS UNLIMITED
Calls MINS UNLIMITED
Data GB 20 GB
Contract 30 days
What is a Business SIM Only deal?
The business SIM only plan functions similar to a regular business mobile contract. It provides a bundle of texts, minutes and data for a set monthly fee. However, it does not include the expense of a brand-new device. It's the reason it's called SIM only.
Check our plans -> business sim only plans
How does SIM only work?
SIM-only deals easily choose the best plan of minutes, text messages, and data to meet your needs. Insert your SIM card in your phone, and you're ready to go.

What business SIM mobile provider does work with The VoIP Shop?
Here at The VoIP Shop, we partner with some reputable business mobile providers who offer excellent service, competitive rates and unbeatable mobile connectivity.

- Vodafone is one of the biggest UK mobile service providers. Vodafone offers a range of SIM-Only plans that can be adapted to any business.
- O2 - The most significant UK mobile network operator provides an array of SIM-Only plans, as well as incentives and prizes as part of its Priority program
Check Our Latest Business SIM only Deals
What is the difference between a business SIM-only contract and a pay-per-month contract?
A handset is a primary distinction between SIM-only contracts and pay-per-month contracts for mobile phones in business. If you sign up for the pay-per-month business mobile phone contract, you’ll be given the option of purchasing a brand-new tablet or handset; however, with a business SIM only, you get the new SIM card that you can slot into your current device.
Both provide inclusive calls, data, as well as international roaming. So, the decision is based on whether you're looking to upgrade your technology.
How does SIM only work?
SIM-only deals easily choose the best plan of minutes, text messages, and data to meet your needs. Insert your SIM card in your phone, and you're ready to go.
Why choose The VoIP Shop's Business SIM Only Deals?
5G at No Additional Cost
More speedy mobile connections, higher capacity of networks, and less latency - 5G are available in all our plans.
Business Add-ons
Find cost-effective solutions for the issues that small-sized businesses issue with our selection of Business Add-ons.
SIM is Only Available for Tablets
Every business has its unique requirements. That is why we offer data-only SIM plans designed for tablets.
Do i need a new sim for 5g ?
You don't need to get a new SIM card for your 5G phone; your existing SIM card will work with your new phone. But in order to access the 5G network, you will first need a 5G compatible mobile phone. (New Radio)NR technology is used in 5G, which is different from the 4G LTE technology.
What are the advantages of 5G in business?
Alongside the faster speeds of up to 1Gbps, 5G also offers many benefits to businesses, such as:
- Higher reliability 5G provides more stable connections than before. There's a lower chance of your internet or calls going down, and the more reliable connectivity will allow you to improve efficiency and productivity.
- Lower latency the term "latency" refers to the amount of time it takes information to move from one location to the next. It is the reason for the delay experienced by some devices while calling or browsing. 4G networks typically have a latency between 40 and 50 milliseconds. However, 5G is expected to reduce this to a barely noticeable 1 millisecond or lower. So will also help to boost efficiency and productivity.
- More capacity the more devices connected simultaneously, the slower speeds of connection you will experience; however, the higher capacity of 5G will eliminate this issue which means that more devices will be connected at no loss in performance.
- More flexible and remote work 5G will provide many more users access to a speedy, high-quality, and stable internet even in rural or remote locations. So can improve the working conditions of remote workers, for example, those who work in co-working areas which can help reduce expenses for companies that are less dependent on having employees within a single office.
- Better VoIP service If you're using mobile VoIP to conduct business calls, it will depend on your having adequate speed for uploading and downloading. It has higher speeds and a flexible bandwidth, so you'll experience more stable and reliable audio and video calls, with less risk of quality dropping or the calls completely disappearing. We provide best sim card deals uk
Business SIM Only Deals - FAQ
What is an eSIM?
An eSIM is the chip inside your phone to store the data you require without an actual SIM card. Certain smartphones may not be compatible with this type of technology. However, it would help to speak with our tech-savvy team to learn more.
How do I swap my SIM card?
If the device you are using is compatible with the new SIM Only (our experts with the latest technology will ensure it is before switching), it is easy to take off the old SIM and then insert your new one at your date of transfer.
What is an Business SIM only plan?
With the company SIM solely contract, you receive an annual allowance of minutes, data, and texts in just one SIM card. So allows your employees and you the freedom to utilize any unlocked device.
SIM-only plans are ideal for those who don't want a change in their mobile but desire to benefit from our fantastic network.
Can I keep my existing number if I switch to a SIM for a business-only deal?
Yes. If you'd like to keep your current number while changing to an enterprise SIM only deals, you'll require a PAC number. Our tech-savvy team can help you with this.
What type of business SIM the contract's length is ideal for me?
We provide businesses SIM-only plans that run for 12-months, 24-months or 30 days. If you're looking for stability and a clearer price for your business, our more extended plans are the best for you. These include 24 - and 12-month contracts. If you're looking for the most excellent flexibility, the shorter 30-day contracts are ideal for flexible businesses.
How do I find my PAC number?
Contact your old provider for the PAC code. You can usually do this over the phone or on the internet. You can also use Ofcom's text to switch services. Text "PAC" to 65075 and receive your PAC number straight to your mobile.
Once you've received your PAC number, you’ll need to give the code to the new network so they can move your number.
Which Business Mobile phone service network is best?
It's all about what's the most significant to you. To assist you in making the best choice, this is a brief overview of what the most popular networks provide.
- Vodafone is one of the most well-known cell networks across the United States. Vodafone boasts a decent range of SIM-only plans for 30-day, 12 month or 24-month contracts. You can also avail pay-as-you-go bundles, as well as the Vodafone Unlimited and Red plans let users access Spotify, YouTube and Amazon Prime.
- O2 lets you select a wide range of flexible SIM-only rates, prior additional services like a ticket to concerts ahead of when they are sold out to the general public, and many additional benefits.
Do I need to purchase a SIM-only 5G plan?
You sure can. The networks that offer 5G-only plans are O2, Vodafone. Moreover, most 4G SIM-only plans have 5G connectivity which means you can begin immediately using them.
Which SIM card will I require?
There are three primary kinds and dimensions of SIM cards available to be compatible with particular devices. They include:
- Standard SIM card (15mm x 25mm)
- Micro SIM card (12mm x 15mm)
- Nano SIM card (8.8m x 12.3mm)
Standard SIMs are rarely used these days, and micro-SIMs are scarce. Most modern smartphones utilize nano-SIM.
However, don't be concerned If you're not sure of the size you should choose as most operators and networks will offer the 3-in-1 SIM card that lets you choose your SIM size suitable for your tablet or phone.
What is the availability of 5G within the UK?
As of the date when this article was written 5G was accessible in more than 100 cities and towns in the UK that include: London, Cardiff, Aberdeen, Birmingham, Belfast, Edinburgh, Manchester, Bath, Bristol, Chelmsford, Coventry, Leicester, Liverpool, Oxford, Plymouth, Glasgow, Hull, Leeds, Lichfield, Lisburn, Salford, Sheffield, Stirling Sunderland, Wakefield, Wolverhampton, Newcastle and Nottingham.