With no restrictions on data, speeds, calls or texts across the UK. All on the UK's Fastest 5G network.


We offer your business more.

Unlike some networks, we don't cap your usage and speeds. So you don't need to worry about over spending. None of our business plans are sharers, which means no second guessing on how much data and airtime your team is using. You'll get simple Unlimited plans, at an unbeatable price.


“Value is one of the key draws to being with Three. Reliability is a massive factor too. We’ve faced no blips in the coverage.”
Matt Stebbings, ICT Support Manager, Bedfordshire Fire and Rescue Service

View all business case studies

No limits on data, speeds, calls or texts for your team.

Whether you choose a Three Business Adapt plan, Boundless offer, or a business phone, we can take away the worry of over spending. We're your adaptable business partner.

Three Business Adapt.

It's more than a multi SIM plan. Add connections any time, and get reports on your team's usage and spend.

Choose a plan

Boundless offer.

Switch to Boundless, and get up to 20 Unlimited data SIMs with no caps on data, speeds, calls and texts.

See Boundless offer

Business phone deals.

Choose Business Pay Monthly. Get a business phone that works as hard as you do.

Get a phone

How to buy

Chat to us

Call us today:

0800 033 8022

Or call us from your Three Business phone on 337

We're here Mon-Fri, 8am to 8pm, Saturday, 9am to 5pm.

Why choose Three Business?

99% UK Coverage

Our combined 3G & 4G network covers 99% of the UK outdoor population.

About our network

The UK's Fastest 5G network

According to Ookla, our 5G's the Fastest around.

More about our network

Business Price Promise

We beat our biggest competitors’ prices.

About Price Promise

Our Unlimited services are available in the UK. When roaming, Unlimited services are subject to charges and our Fair Use Policy