Free VoIP for business for UK businesses
Free VoIP from Silux Call is internet-based business calling at £0 for 7 days on the free trial — a UK number, softphone apps, voicemail and call routing, billed GBP-only if you ever scale up.
What you get free
How the free offer works
Free for one user and 30 outbound minutes for 7 days. It is real hosted VoIP — not a stripped demo — and paid plans start at £4.75 a month.
Also searched as
UK buyers look for this under many names — Silux Call covers all of them: free voip, free voip uk, free voip for business, free voip phone service, free voip number and app, best free voip uk.
FAQs — Free VoIP for business
Is free voip for business really free?
Free VoIP from Silux Call is internet-based business calling at £0 for 7 days on the free trial — a UK number, softphone apps, voicemail and call routing, billed GBP-only if you ever scale up. Free for one user and 30 outbound minutes for 7 days. It is real hosted VoIP — not a stripped demo — and paid plans start at £4.75 a month.
What do I get for free?
7-day free trial (no card, no contract); UK number + apps for every device; Voicemail-to-email, IVR greeting, call divert; Free PSTN switch-off audit; Add AI receptionist and scam shield on paid plans.
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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