Free VoIP for business for UK businesses
Free VoIP from Silux Call is internet-based business calling at £0 for 14 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 14 days. It is real hosted VoIP — not a stripped demo — and paid plans start at £4.75 per user per 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 14 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 14 days. It is real hosted VoIP — not a stripped demo — and paid plans start at £4.75 per user per month.
What do I get for free?
14-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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