UK Phone Numbers for AI Voice
UK Numbers Built for AI Voice Providers
Deploy UK telephone numbers directly into your AI Voice Agents without operating your own carrier or SIP infrastructure. Managed UK telephony for businesses building AI Voice Agents for their customers.
You build the agent. We connect it to the UK telephone network.
A caller dials a UK number
01, 02 and 03 numbers from our own ranges
i164.ai UK voice network
Encrypted SIP and voice, pooled channel capacity
Your AI Voice Agent answers
Delivered direct into ElevenLabs or Cloudflare
01 / 02 / 03 UK numbers
No per-minute inbound charges
Pooled concurrent channels
Direct from the Ofcom range holder
The UK telephony layer for AI Voice
No PBX. No SIP infrastructure to operate. No carrier integration to maintain. Focus on agent design, prompts, workflows and your customers while we handle the numbers and voice delivery.
Wholesale number capacity
Reserve capacity for your service and draw numbers down as your customers need them.
Fixed monthly pricing
No per-minute inbound usage billing. Easy to cost, package and resell.
Shared channel capacity
Concurrent calls are pooled across your whole account, not tied to individual numbers.
Direct-to-agent delivery
Numbers connect straight into supported AI Voice platforms. No SIP or PBX to run.
Streamlined provisioning
Complete partner onboarding once, then provision within an agreed framework.
Direct from the range holder
Work directly with the supplier holding the underlying Ofcom number allocation.
Scale when you need to
Start with three development numbers, launch with 100 and grow into thousands.
Add margin with Gold numbers
Offer premium, memorable numbers to your customers as an additional product.
Build→Launch→Scale
Start with three development numbers, launch with 100-number capacity and grow into thousands.
BUILD
AI Voice Developer Programme
For AI Voice startups developing a commercial service.
£75activation
Fully credited against your first LAUNCH invoice when you upgrade within 60 days.
3 UK development and test numbers
60-day development period
Direct delivery into a supported AI Agent platform
Direct engineer support from our team
Fast track into wholesale onboarding
LAUNCH
Wholesale Starter
Your first production UK number estate for AI Voice.
£125per month
100-number provisioning capacity, plus a £50 Number Block Activation Fee.
Provision up to 100 UK numbers
50 shared concurrent channels included
No per-minute inbound usage charges
Allocate up front or draw down as you onboard customers
Add capacity in further 100-number blocks
SCALE
AI Voice Wholesale
For established platforms where UK numbers are part of the product.
Custom
1,000+ number provisioning capacity on a bespoke wholesale agreement.
Unit pricing that improves as you grow
Large pooled concurrent channel capacity
Reserved and geographic number inventory
API provisioning and automation
Enhanced support and defined escalation
Provisioning capacity, not a bundle of numbers
You are approved for a number estate of an agreed size, not handed a list of numbers you may never use. Take numbers as you need them, where you need them.
Allocate up front
Already know your deployment? Provision numbers immediately.
Draw down just in time
Select the right number, and area code, as each of your customers is onboarded.
| Provisioning capacity | Concurrent channels |
|---|---|
| 100 numbers | 50 channels |
| 200 numbers | 100 channels |
| 300 numbers | 150 channels |
| 500 numbers | 250 channels |
| 1,000 numbers | 500 channels |
Channels are pooled across your whole account. Additional channel packs are available for a fixed monthly charge.
Delivered direct to your AI Agent platform
Numbers are connected straight into supported AI Voice platforms. We add new integrations based on partner demand.
ElevenLabs
Production delivery into ElevenLabs Conversational AI agents.
Cloudflare
Production delivery for agents built on Cloudflare Workers voice infrastructure.
Vapi
The next integration we plan to add as partner demand grows.
Your platform?
We add integrations based on partner demand. Let us know what you use.
Why choose i164?
UK numbers direct from the range holder. We are a UK operator, Served Up Ltd, with our own Ofcom allocated number ranges and over 20 years' experience operating our VoIP network.
There are no layers of resellers between you and the network your service depends on, so you get direct support, direct escalation and long-term numbering stability.
Our own Ofcom allocated UK number ranges
Over 20 years operating our VoIP network
Direct support and escalation
Long-term numbering stability
Bespoke number products as you scale
Further reading
Background reading on how the service works.
Not sure?
Not sure which plan is right for you?
Tell us about your AI Voice service and we will help you work out the right plan, number capacity and channel requirements for your customers.
Free, no-obligation call with our team