Three contact numbers: How to get in touch
Dan Howdle • January 20th, 2026
When you need to get hold of your broadband provider, it helps to know the easiest way to do it. Three Broadband gives you several options – from phone support and live chat, to help via social media. And honestly, that info isn't always easy to find – it certainly wasn’t for us – so we’ve pulled together everything you need in one place. Convenient!
How to contact Three Broadband
Three’s broadband support team can be reached by phone most days of the week. Whether you’re already a customer or are thinking of signing up, the easiest way to get help is by calling the right number for your situation.
| Service | Number | Hours |
|---|---|---|
| Three Broadband customer service | 0333 338 1001 | 08:00 to 20:00 Mon–Fri 09:00 to 18:00 Sat & Sun |
| Three Broadband support (from a Three phone) | 333 | 08:00 to 20:00 Mon–Fri 09:00 to 18:00 Sat & Sun |
| Three Broadband sales | 0330 221 9424 | 8am to 9pm |
| Three Broadband new customers | 0330 221 9424 | 8am to 9pm |
| Live Chat | Chat with support online | Hours vary (generally extended evenings) |
| X | @ThreeUKSupport | - |
| facebook.com/ThreeUK/ | - | |
| Three website support | three.co.uk/support | - |
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Gig1 Fibre Broadband
No price rises in 2026
1.1Gb
Average speed
No phone line
24
Month contract
Zero upfront cost
£23.99 Per month
Effective monthly cost is calculated by adding up all the monthly costs, price rises and any discounts and dividing it by the contract length.
M500 Fibre Broadband
No price rises in 2026
516Mb
Average speed
No phone line
24
Month contract
Zero upfront cost
£20.99 Per month
Effective monthly cost is calculated by adding up all the monthly costs, price rises and any discounts and dividing it by the contract length.
M125 Fibre Broadband
No price rises in 2026
132Mb
Average speed
No phone line
24
Month contract
Zero upfront cost
£16.99 Per month
Effective monthly cost is calculated by adding up all the monthly costs, price rises and any discounts and dividing it by the contract length.
How do I call Three Broadband's customer service?
If you're already a Three Broadband customer and need help with your service – or if you just want to upgrade your package – the quickest way is to call customer support. Just dial 0333 338 1001 from any phone, or 333 if you're using a Three mobile. You’ll be guided to the right department based on your query.
Calls to 0333 numbers are included in most phone packages, so if you’ve got inclusive minutes, you likely won’t pay extra. If not, it’ll cost the same as a standard UK landline call. You can also reach Three Broadband through live chat or social media if you prefer not to call, details above.
Three Broadband best new deals
We sometimes have access to some special offers with Three Broadband that you will not find on the provider’s own website. You can call the sales team (for new customers) on 0330 221 9424 from 8am to 8pm Monday to Sunday.
Three Broadband's postal address
Hutchison 3G UK Ltd
450 Longwater Avenue
Green Park
Reading
RG2 6GF
How do I contact Three Broadband customer service via Live Chat?
Three Broadband also offers a Live Chat service through its website, which is often the quickest way to get help if you don’t fancy sitting on hold or aren't somewhere a phone call is convenient to make. You’ll usually start by chatting with an automated assistant, which asks a few simple questions to work out what you need help with before passing you over to a real person where appropriate.
Live Chat can be used for most common queries – broadband support, account questions, upgrades, complaints and all the rest.
Three Broadband on social media
Three has a number of active social media accounts where customers can reach out for help or advice. On X you can find Three’s support team at @ThreeUKSupport, where posting or sending a direct message often gets a quick response.
Three is also active on Facebook at facebook.com/ThreeUK/, where you can post a message or send a private enquiry if you need assistance. These channels aren’t a replacement for official support routes, but they’re useful if you want to ask a quick question or flag an issue.
How to complain to Three Broadband
If you need to make a complaint to Three Broadband, the simplest route is to call its customer services team on 0333 338 1003. Lines are open from 8am to 8pm Monday to Friday, and from 9am to 6pm at weekends. If you're calling from a Three mobile, you can dial 333 free of charge.
You can also raise complaints via Live Chat on the Three website or by filling in a form in the complaints section of the Three website. Three says it aims to resolve complaints as quickly as possible, usually within five working days.
If you're not getting anywhere via the normal channels, consider using social media to escalate – posting @ThreeUKSupport or messaging via Facebook often speeds things up.
How to escalate your complaint
If you do not get the response you hoped for from Three, or if your complaint hasn’t been dealt with after eight weeks, you can take your complaint to the ADR (Alternative Dispute Resolution) scheme. This varies from provider to provider, but in the case of Virgin Media it is Ofcom-approved CISAS (the Communications and Internet Services Adjudication Scheme).
You can call CISAS on 0207 520 3814 or send an email to cisas@cedr.com detailing your situation with evidence. CISAS is impartial and will investigate your case. If Virgin is found to have been at fault, it is obliged to comply with the findings of CISAS.
