Boundless

Multi SIM savings

More SIMs mean better value, even when you buy over time. Save up to £20 per SIM per month compared to EE, Vodafone, or O2.

Winter Sale
Save £504 when you buy 3 SIMs 
[4]

1 SIM

Winter Sale

  • Unlimited data, texts & minutes
  • Online self-service

Per SIM
£17.00
a month [1]

2 SIMs

  • Unlimited data, texts & minutes
  • Online self-service

Per SIM
£13.00
a month [1]

Save £504

  • Unlimited data, texts & minutes
  • Online self-service

Per SIM
£10.00
a month [1]

10 - 15 SIMs

  • Unlimited data, texts & minutes
  • Online self-service

Per SIM
£8.00
a month [1]

For maximum savings, choose 10+ SIMs

1 SIM

  • Unlimited data, texts & minutes
  • Online self-service

Per SIM
£20.00
a month [1]

2 SIMs

  • Unlimited data, texts & minutes
  • Online self-service

Per SIM
£15.00
a month [1]

3 - 9 SIMs

Winter Sale

  • Unlimited data, texts & minutes
  • Online self-service

Per SIM
£12.50
a month [1]

10 - 15 SIMs

  • Unlimited data, texts & minutes
  • Online self-service

Per SIM
£10.00
a month [1]

Each April, Monthly Charge rises by 4.5% [1]

Not a business owner, and not self-employed? Shop SIM for Personal

We're beating our competitors' prices

EE

Costs up to

£15.00 more
per SIM per month

Vodafone

Costs up to

£18.25 more
per SIM per month

O2

Costs up to

£16.00 more
per SIM per month

As advertised on 07 November 2024 [2]

Why choose a business multi-SIM plan?

5G Ready SIMs

Access our 5G network at no extra cost

eSIM compatible

Choose between an eSIM or a physical SIM with our plans - the choice is yours.

Simple switching

Moving your number over to Three is as simple as sending a text

Unlimited data

Endless streaming, browsing, and sharing in the UK

Talk to our business experts

Looking to buy more SIMs?

Get the adaptable business plan with up to 250 connections.

  • Unlimited data, texts & minutes
  • Analytics on your mobile usage & spend
  • Award-winning business support
  • No daily roaming charges when you do business in Go Roam in Europe destinations

Why choose Three Business?

More about our network

According to Ookla®, our 5G's the fastest around. [3]

Terms & Conditions

Boundless Business Offer is available to business customers who are purchasing or upgrading to Three Business 12 and 24 month Unlimited SIM-only plans. Participants who purchase Unlimited SIMs on a 12 or 24 month plan from Three (whether purchase is made in-store, online, or by telephone via our contact centre) on or after 1 May 2021 are eligible to unlock a discounted price based on the number of 12 or 24 month Unlimited SIMS (as applicable) already in existence at the time of purchase and the number of additional 12 or 24 month Unlimited SIMs (as applicable) the customer wishes to purchase. 

Prices vary between 12 and 24 month plans. Boundless Business Offer not available in conjunction with any other offer. See full terms for details: Terms & Conditions | Three.