Free business phone number for UK businesses
A free business phone number from Silux Call gives a company a professional UK number — separate from any personal mobile — at £0 during the 7-day free trial, ringing on an app on every device.
What you get free
How the free offer works
Free for one user with 30 outbound minutes for 7 days; after that, sole traders usually take Entry at £4.75 a month with 2,000 outbound UK minutes.
Also searched as
UK buyers look for this under many names — Silux Call covers all of them: free business phone number, free business phone number uk, free phone number for business, free company phone number, free work phone number, free phone number for small business.
FAQs — Free business phone number
Is free business phone number really free?
A free business phone number from Silux Call gives a company a professional UK number — separate from any personal mobile — at £0 during the 7-day free trial, ringing on an app on every device. Free for one user with 30 outbound minutes for 7 days; after that, sole traders usually take Entry at £4.75 a month with 2,000 outbound UK minutes.
What do I get for free?
One UK business number free for the 7-day trial; Professional number separate from your personal mobile; Voicemail-to-email and an auto-attendant greeting; Free call divert to your mobile when away; Add team members and numbers as you grow.
Do I need a credit card to start?
No. You can start the Silux Call free trial and free trials without a card. You only add payment details if you choose to upgrade to a paid plan.
Is it ready for the 2027 PSTN switch-off?
Yes. Silux Call runs entirely over IP, so it is unaffected by the 31 January 2027 PSTN switch-off — and every account includes a free WLR2 migration audit.
Get a free number in your city
Free for your industry
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