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Using your personal mobile as your business number: the risks

It costs nothing and works fine at the start. The trouble comes later, and it is harder to unpick than most people expect.

Blog · Published 21 August 2026

What goes wrong

  • Work calls arrive at all hours with no way to switch off
  • Nobody can cover for you when you're away or ill
  • The number is on invoices, vans and job sheets you can't recall
  • You can't hand it to staff without handing over your personal life
  • It has no resale value if you ever sell the business

The straightforward fix

Add a business number that rings your existing handset. You keep one phone in your pocket, but calls to the business number are identified as work, follow business hours, and can ring colleagues too. Callbacks show the business number, so customers start saving the right one.

Doing it before it hurts

Switching early is far easier than switching after five years of advertising. If you already have a personal number in circulation, run both for a while and update your listings gradually.

Want this set up for you?

Plans start at £19 per user per month with UK calls included. See pricing or get a quote.

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Pricing

Plans from £19 per user per month.

More about pricing

More on getting started

0800, 03 or local: choosing a UK business number

What each UK number type signals to customers, what they cost to call, and how to pick between a local area code, an 03 national number and 0800 freephone.

Read: 0800, 03 or local: choosing a UK business number

How to choose a business phone system in Leeds

A practical guide to buying a business phone system in Leeds: keeping your 0113 number, local install and support, broadband realities and what it should cost.

Read: How to choose a business phone system in Leeds

Ready to switch to a smarter phone system?

Special offer: free number port and free setup — worth £174. Talk to a UK specialist today, no pressure and no jargon.