Virtual phone numbers from the UK
Choose a local UK number from 569 cities, including London, Manchester and Birmingham.
It's your number: use it on any device or software. Make and receive calls with FlyNumber SIP, forward calls to any phone, or let an AI voice agent answer.
A low monthly price per number, not per user. No contract.
Get a UK number See regionsLocal numbers $2.95/month · National numbers $2.95/month · Mobile numbers $2.95/month · Toll-free numbers $2.95/month + per-minute incoming
Use any device or software
Any device can be used to make and receive calls with your FlyNumber.
- Any SIP or VoIP app on iOS or Android
- Mac, PC, or Linux computer
- Desktop office phone
- Any regular phone number (to receive calls)
- Any VoIP solution (e.g. Asterisk, 3CX, 3rd party VoIP)
Choose from 4 powerful ways to use your FlyNumber
1.) Use FlyNumber SIP to make and receive calls
- Make and receive calls with your United Kingdom number in any SIP calling app from the app stores — Zoiper, Groundwire, Linphone and more — or on a desk phone. We help you set it up.
- Incoming calls are included in the number's monthly rate, except on toll-free numbers, which are billed per minute; outgoing calls are billed per minute from your prepaid balance, with your United Kingdom FlyNumber as the caller ID.
- Register up to 5 devices, with voicemail built in.
2.) Let an AI voice agent answer your UK calls
Set your UK number to AI voice agent answers and a built-in agent picks up. It answers questions from what you tell it, takes messages and transfers callers to you.
The recorded greeting plays in English. Write the opening line and rules in English and the agent answers in English, switching to the caller's language if they speak another.
$0.10 per minute of AI conversation, billed per second. No monthly fee for the agent.
3.) Forward the United Kingdom phone calls to any standard phone number worldwide
- For a low per min rate you can forward the United Kingdom calls to any regular phone number in the world.
- You'll see the caller ID of the person calling your United Kingdom FlyNumber on the phone you're forwarding to.
- Change the forwarding number anytime via the FlyNumber panel.
- Consider our optional cloud phone system to enhance call forwarding options.
4.) Set the United Kingdom number directly to VoIP
- Set the United Kingdom number directly to a SIP/VoIP address.
- We'll send the United Kingdom calls to a VoIP destination for free (unlimited minutes).
- High level call logs to help diagnose/debug any issues.
- Use any 3rd party VoIP provider or your own PBX system (Asterisk, FreePBX, 3CX, etc.)
- In your FlyNumber panel this is the Forward to SIP / VoIP Address option.
Note
Switch between them any time from your FlyNumber panel. Two more settings live there: Park the Number, which stops the number ringing anywhere (callers hear busy) with no call charges, and the optional cloud phone system, $14.95 a month for voice menus, ring groups and business hours.
FlyNumber’s stand-out features
- Own your UK phone number, with flexible porting options.
- Unlimited incoming calls with VoIP, perfect for busy Brits.
- Affordable with charges per number, not per user.
- Manage forwarding settings anytime in your account.
Registration Requirements
No registration paperwork is needed for United Kingdom numbers — your number usually activates right away.
Porting Your Existing Number to FlyNumber
Already have a UK phone number? You can transfer (port) it to FlyNumber and keep using the same number with all our features.
We support porting for local, national, mobile, and toll-free UK numbers. You'll typically need:
- A recent invoice from your current phone provider
- Your account number and main billing number
- The name of your current carrier
- For mobile numbers: your PAC code (available from select carriers including EE, Three, and Gamma)
When you're ready, submit the request from your FlyNumber panel — download the LOA (letter of authorization) there, then upload the signed form with a recent bill. We handle the carrier side and keep you posted. Porting is free for UK numbers, and international ports typically take one to three weeks.
Interested in porting? Learn more about porting or get in touch and we'll guide you through it.
Example use cases
Estate agents managing listings
Assign a unique number to each property listing. Track which ads generate the most interest and keep buyer inquiries organized.
Regional marketing campaigns
Use different numbers for promotions in Yorkshire, Cornwall, or other regions. See which campaigns perform best and adjust accordingly.
Online marketplace privacy
Selling on Gumtree or Preloved? Keep your personal number private while still being reachable by buyers.
Family abroad
Let overseas family call you on a local UK number without international fees. Stay connected without the cost.
Startup presence
Project a professional image without expensive phone systems. Get a local business number whether you work from home or a coffee shop.
Call like a local, pay like a local
In many cases if you make outgoing calls to an United Kingdom phone number using an United Kingdom FlyNumber as the caller-ID the rate is significantly cheaper.
- The rate is sometimes 10x cheaper so if you call a certain country often, it pays to get a FlyNumber from there.
- Anytime you make outgoing calls with FlyNumber (via FlyNumber SIP or the optional phone system) there is a low per minute rate.
- You can make outgoing calls with FlyNumber SIP or from the optional phone system.
- More details on the phone system billing can be found in our docs.
General technical details on United Kingdom numbers
- Country code: +44, followed by area code and local number.
- Standard format: +44 20 1234 5678 for London numbers.
- Dial local numbers directly, omit the country code and leading zero.
- Area codes introduced in 1958; system modernized over decades.
- Landline numbers usually 10 digits, mobile numbers 11 digits.
FAQs
How can I use a FlyNumber UK virtual number to manage my business communications?
You can forward the UK virtual number to any phone number globally, use our cloud phone system for advanced features like IVR and call recording, or set it directly to a VoIP/SIP address for unlimited incoming minutes.
Can the UK FlyNumber display the caller ID of the original caller when forwarding calls?
Yes, when you forward calls from your UK FlyNumber, the original caller's ID is displayed on the receiving phone.
Is it possible to make calls showing my UK FlyNumber as the caller ID?
Yes — with FlyNumber SIP or the optional cloud phone system, you can make outgoing calls with the UK number as the caller ID.
What flexibility does the FlyNumber cloud phone system offer for UK numbers?
The cloud phone system includes day/time-based routing, call blocking, and integration with SIP accounts. It supports features like IVR, multiple forwarding options, and detailed call logs.
How does FlyNumber support VoIP integration for UK phone numbers?
FlyNumber is compatible with any VoIP solution supporting the SIP protocol. Choose the Forward to SIP / VoIP Address option, enter your provider's SIP host and your username, and follow our VoIP setup guide if you need a hand.
United Kingdom forum topics
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Get your United Kingdom number today