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Award-winning coverage at the right price

Three+ rewards for your team

With the Three+ app, your whole team can enjoy offers from top UK brands, restaurants, and takeaways, plus presale tickets and competition giveaways.

The UK’s Fastest 5G Network

According to Ookla, our 5G's the fastest around [1]. Our combined 4G & 5G network covers 99% of the UK outdoor population [2].

Tailored services & support

From day 1, enjoy dedicated support from our UK-based team. Our range of services are designed to cater for your business's specific needs. 

Get the best value SIM deals

Choose as much data as you need on our single SIM plans, or get multibuy savings.

Flexible, 5G-ready plans

  • Get unlimited UK data, texts & minutes on a range of SIM plans
  • Available on a 24 month, 12 month, or 1 month contract
  • The more SIMs you buy, the bigger the discount per SIM
  • Choose eSIM to enable multiple numbers on your device
Three Business multi-buy SIMs for small businesses

Exclusive roaming discounts

Work abroad for less whether you need a single SIM or multiple SIMs.  

Inclusive roaming options available on small business SIM plans

Roaming SIMs: simple pricing for peace of mind [3]

  • Choose a plan to help you travel for work within budget
  • Get EU roaming for less, with added savings when you buy multiple SIMs
  • Mix & match inclusive roaming SIMs and standard SIMs, to suit your team

Only need 1 SIM? Our team can still find you a great roaming deal.

Small business internet deals

Choose a 12 or 24 month plan, with no upfront costs. 

5G Business Broadband

Unlimited data

No landline. No engineer. No waiting.

  • Superfast 5G with 150mb/sec average download speeds [5]
  • Simply plug in and work, at affordable prices
  • Move your broadband hubs between offices, and create guest Wi-Fi

Use the coverage checker to see view access to our award-winning 5G network [2].

5G business exclusive deals on small business internet from Three Business

Affordable mobile phone contracts

Get top brand business phones at the right price, with the latest AI to support your working day. 

Making life easier for small businesses

No matter how you work, the right mobile handset really can make running a small business easier day to day. 

Call or chat to us for full details of all the phones, colours, storage options, tariffs, and contract lengths available to you.

Small business shop owner showing a customer their available stock online using their new mobile handset from Three Business

Let's talk business 

From SIM Only plans to phones and 5G Business Broadband, get the connectivity plan that's right for you. 

Trusted by a million customers across the UK

Spotted Bee trusted Three Business to help expand their delivery service, and stay connected.

“Three Business knows my business well enough to understand what I need and what’s going to help me, and their solution was also cost-effective.”

Rob Galkoff
Managing Director at Spotted Bee

See our other customer stories

Why choose Three Business?

More about our network

According to Ookla®, our 5G's the fastest around. [1]

  • Ookla

    Fastest 5G based on Ookla® Speedtest Intelligence® data 1H 2025. Visit Fastest 5G Speed Test Awards to find out more. All rights reserved. Ookla trademarks used under license and reprinted with permission.

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  • 5G Business Broadband

    Subject to coverage. Performance may vary.

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  • Inclusive roaming - Fair Use Policies

    Fair use policies apply.
    Go Roam in Europe - 12GB data, and use your UK monthly plan allowance for calls and texts back to the UK, or within Go Roam in Europe destinations.
    Go Roam Around the World and Go Roam Around the World Extra share - 12GB data, 3,000 minutes, and 5,000 texts back to the UK per billing month. 
    If customers exceed these allowances, surcharges may be applied.
    If during any 4-month period, Customers roam in Go Roam destinations for 60 days or more, additional roaming charges may apply. Customers shall be notified before charges are applied.

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  • 5G Broadband Download Speed

    As at December 2024, the advertised 5G broadband download speed of 150Mbps applied to at least 50% of 5G Broadband customers within 5G coverage areas (check here), between the peak hours of 8pm and 10pm. This measurement was gained by monitoring what those 5G hubs demanded of the network during the “busy hours” of 8pm-10pm. We continue to monitor this on an ongoing basis.  

    Due to the nature of the wireless technology delivering your Broadband, the speed that any individual premises will experience is not guaranteed, may vary and can be impacted by local factors, such as the positioning of the hub, line of sight to your nearest mast, local topography (such as hills), number of users accessing the network in your area and thickness of walls and windows. 

    5G broadband hubs may operate outside of our 5G coverage areas, although speeds may vary.

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