Three Network Business SIM Only UK – Unlimited 5G Data + Free Roaming in 92 Countries – £37 per Month

If you are searching for:

• The best business SIM with international roaming included
• Unlimited 5G business mobile plan in the UK
• A corporate mobile contract with global coverage
• A business SIM that works in Europe, the Middle East and Asia
• The strongest roaming SIM for UK companies operating overseas

This Three Network Business SIM Only Plan positions itself as one of the most globally competitive business mobile tariffs available in the UK market.

Powered by Three UK, this plan delivers unlimited domestic usage and extensive international roaming across 92 countries, all for £37.00 per month excluding VAT on a 24-month business contract.

List of Roaming Free Countries Inclusive of the Tariff Price:

G-M

Fair Usage Policy :

Roaming usage is subject to a 12GB/month fair usage policy, which is ideal for emails, calls, navigation, and general connectivity while traveling internationally. Within the UK, you’ll continue to enjoy the power of Three’s fast 5G network with truly unlimited usage.

At just £37.00/month (excl. VAT), on a 24-month contract, this plan delivers exceptional value to businesses that operate internationally and need a seamless, cost-effective mobile solution.

Why UK Businesses Are Actively Searching for Global Business SIM Plans

Across the UK and particularly within Scotland’s enterprise community, companies are asking:

“Which UK business SIM includes global roaming?”
“Does any unlimited business mobile plan include Middle East roaming?”
“Best corporate SIM for international travel?”
“Business SIM for UAE, Saudi Arabia, Japan and EU?”

As more companies operate across Europe, the Gulf region and Asia, traditional roaming add-ons are no longer sustainable.

Businesses want:

• Unlimited 5G data in the UK
• Free roaming in multiple global regions
• Predictable monthly costs
• Strong UK coverage
• A plan built for international corporate mobility

This tariff delivers precisely that.

Unlimited 5G Data in the UK – Built for Heavy Usage

Inside the UK, this business SIM offers:

• Unlimited 5G data
• Unlimited calls to UK mobiles and landlines
• Unlimited UK texts

This makes it ideal for:

• Corporate directors
• Export and import businesses
• Construction firms operating across regions
• Renewable energy projects in Scotland
• Field engineers
• Logistics operators
• Remote-first companies

From Glasgow’s financial district to energy infrastructure projects in Aberdeen and the Highlands, uninterrupted connectivity is a business necessity.

Offer subject to credit & identity checks. Exclusively for registered UK businesses. Prices exclude VAT. Free roaming subject to 12GB/month fair usage.