From a Three handset
333Free of charge from any Three pay-monthly or pay-as-you-go mobile. The default route for billing, technical and account queries.
Opening hours
Mon-Fri 08:00-20:00, Sat-Sun 09:00-18:00
Full Three contact directory
Contact Three UK
Every phone line, social channel and online route to Three customer service in one place. The fastest route from a Three handset is 333, free of charge. From any other phone, dial 0333 338 1001. Hours, accessibility line and business support listed below.
At a glance
333 from a Three handset (free)
0333 338 1001 general support
Mon-Fri 08:00-20:00, Sat 09:00-18:00
@ThreeUKSupport on X (Twitter)
At a glance
- 333 from a Three handset (free)
- 0333 338 1001 general support
- Mon-Fri 08:00-20:00, Sat 09:00-18:00
- @ThreeUKSupport on X (Twitter)
Contact
Updated 19 May 2026
Phone directory
Every Three phone line in one place
Use 333 from your Three handset whenever possible, it is free and goes to the same team as the long number.
From any other UK phone
0333 338 1001General customer service from a landline or non-Three mobile. Charged at standard UK rate, free in most inclusive bundles.
Opening hours
Mon-Fri 08:00-20:00, Sat-Sun 09:00-18:00
Alternative customer service line
0333 300 3333A long-standing alternative Three number. Use this if 0333 338 1001 is busy.
Opening hours
Mon-Fri 08:00-20:00, Sat-Sun 09:00-18:00
Three Business
0800 033 8033Dedicated B2B line with shorter queues than consumer support. From a Three Business handset, dial 337 free of charge.
Opening hours
Mon-Fri 08:00-20:00, Sat 09:00-18:00
Accessibility team
0800 358 3045Free dedicated line for customers with disabilities. Offers BSL video relay, large-print billing and tailored support.
Opening hours
Mon-Fri 08:00-19:00, Sat 09:00-18:00
Calling from abroad
+44 7782 333 333International number for Three customers travelling outside the UK. Free from a Three handset on Go Roam.
Opening hours
24/7
Online channels
Beyond the phone, where else to reach Three
Most billing and usage questions resolve in the My3 app without a phone call. For account-specific support, X (Twitter) is the fastest social channel.
Three live chat
Available 24/7 inside the My3 app and on three.co.uk. Starts with a chatbot, asks for a human if you need account-specific help.
Open three.co.uk@ThreeUKSupport on X (Twitter)
Three’s social customer service handle. Reply in business hours, normally within an hour. Push most queries to DM for account checks.
Open on XThree on Facebook
Slower than X for support but useful for tracking outages and following the Three Broadband product page.
Open Three on FacebookMy3 app
iOS and Android. Bills, data usage, top-ups, Go Roam status and the in-app live chat. The fastest route for most account self-service.
Get My3 on three.co.ukBest route by need
Which channel for which problem?
Calling 333 for everything is the slowest way to deal with Three. Match the channel to the type of problem and you will resolve most issues in minutes.
| Your need | Best route |
|---|---|
| Lost or stolen phone | Call 333 immediately to block the SIM. If abroad, +44 7782 333 333 free from any other mobile. |
| Bill query | My3 app first, then 333 if not resolved. Have your account number ready. |
| Broadband not working | My3 app for the live status check, then 333 if the fault persists more than 2 hours. |
| Cancellation in last 30 days | Use the 30-day money-back form on three.co.uk first; phone backup on 333. |
| Cancellation, end of contract | Call 333. Be ready to wait, and to haggle, retention often offers a better deal than new-customer prices. |
| Formal complaint (CISAS route) | Call 333, ask for a complaint reference, see our complaints page. |
| Accessibility support | Free dedicated line 0800 358 3045, BSL video relay available. |
| New business enquiry | 0800 033 8033 or book a callback at three.co.uk/business. |
FAQ
Three contact, your questions answered
Is 333 free to call from a Three phone?
Yes. Dialling 333 from any Three pay-monthly or pay-as-you-go handset is free of charge, including when roaming inside Go Roam destinations. From any other phone use 0333 338 1001, which is charged at standard UK landline rate and is normally included in inclusive call bundles.
When are Three’s phone lines open?
Standard hours for consumer customer service (333 and 0333 338 1001) are Monday to Friday 08:00 to 20:00, Saturday and Sunday 09:00 to 18:00. The accessibility line closes slightly earlier on weekday evenings. The live chat in the My3 app and on three.co.uk is available 24/7 but starts with a chatbot.
What is the best way to reach Three for a broadband fault?
Open the My3 app first. It shows current network status, any active outages and recent fault history at your address. If it does not resolve, dial 333 and have your account number and postcode ready. For total loss of service longer than 2 working days, Ofcom automatic compensation kicks in, see our complaints page.
Can I email Three?
Three does not publish a public customer-service email address. All written contact is now via the My3 app, live chat on three.co.uk, X (Twitter) DM to @ThreeUKSupport, or letter to the Three UK head office in Maidenhead. For formal complaints, the structured complaint form on the Three complaints page is the recommended written route.
Where is Three’s head office?
Three UK head office is in Maidenhead, Berkshire. The registered address for written correspondence is Three UK, Hutchison 3G UK Limited, 450 Longwater Avenue, Reading, RG2 6GF (the registered office shared with the wider VodafoneThree group). Always include your account number on any letter for the team to be able to act on it.