| 3 Head Office Address | 450 Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF, United Kingdom (3 Media Centre) |
| 3 Head Office Postcode | RG2 6GF (3 Media Centre) |
| 3 Glasgow Office | 123 St Vincent Street, Glasgow, G2 5EA (3 Media Centre) |
| 3 Head Office Contact Number | 03333 381 001 (3 – Contact Us) |
| 3 Customer Service Number | 333 (free from a 3 phone) or 03333 381 001 (from any phone) (3 – Contact Us) |
| 3 Customer Service Number 0800 | 3 does not have an 0800 number. The free alternative is to dial 333 from your 3 phone. From other phones, call 03333 381 001 (standard rate). (3 – Contact Us) |
| 3 Business Support Number | 0808 258 0333 (Monday–Friday, 9am–5pm) (3 Business) |
| 3 Broadband Contact Number | 03333 381 001 or 333 from a 3 phone (3 – Contact Us) |
| 3 Complaints Postal Address | 3 Customer Complaints, Hutchison 3G UK Ltd., PO Box 333, Glasgow G2 9AG (3 – How to Complain) |
| 3 Complaints Phone Number | 333 from a 3 phone or 03333 381 001 from any phone — ask to be put through to the complaints department (3 – How to Complain) |
| 3 Complaints Email Address | 3 does not have a dedicated complaints email. You can submit a complaint via their online complaints form, or escalate to the executive office at executive.office@three.co.uk (3 Community Forum) |
| 3 Head Office Email Address | executive.office@three.co.uk (3 Community Forum) |
| 3 CEO | Robert Finnegan (pre-merger) (Bloomberg) |
| 3 CEO Email | You can try: Robert.Finnegan@three.co.uk (source: @Three_Is_Broken on X) |
| Chief Commercial Officer Email | Elaine Carey — Elaine.Carey@three.co.uk (source: @Three_Is_Broken on X) |
| Executive Office (Escalation) | executive.office@three.co.uk (3 Community Forum) |
| VodafoneThree CEO (post-merger) | Max Taylor (Vodafone Press Release) |
| Contact Details For Media Related Concerns | media@vodafonethree.com (3 Media Centre) |
3 Customer Service Number — How to Contact 3 from Mobile and Landline
The easiest way to contact 3 customer service is to dial 333 from your 3 mobile phone — this is free of charge. If you’re calling from a landline or a different network, you can reach 3 customer service on 03333 381 001 (standard UK rate).
Many people search for a 3 customer service number starting with 0800 (freephone). 3 does not currently offer an 0800 number, but calling 333 from your 3 handset is completely free. From other phones, 03333 381 001 is charged at the same rate as calls to 01 or 02 numbers and is usually included in your phone plan’s minutes.
3 Customer Service Opening Hours:
- Monday–Friday: 8am–8pm
- Saturday–Sunday: 9am–6pm
Source: 3 – Contact Us
3 Live Chat — Online Support, Opening Times and How to Access It
3 offers a free Live Chat service available through their website at three.co.uk/support/contact-us and also through the My3 app. This is one of the fastest ways to get in touch with 3 customer service without calling.
3 Live Chat Opening Times:
- Monday–Friday: 8am–10pm
- Saturday–Sunday: 9am–8pm
You can also use the Live Chat to make a complaint — simply ask the chat agent to log it as a formal complaint. If you prefer, you can request to be transferred to the complaints department through the chat.
Source: 3 – Contact Us
3 Complaints — Email, Phone Number, Form and How to Escalate
If you need to make a complaint to 3 about their service, there are several ways to do it:
3 Complaints Phone Number: Call 333 from your 3 phone (free) or 03333 381 001 from any other phone and ask to speak to the complaints department.
3 Complaints Chat: Use the Live Chat on the 3 website and tell the agent you want to raise a formal complaint.
3 Complaints Form: You can fill out the official online complaints form at three.co.uk/support/complaints/how-to-complain.
3 Complaints Email Address: 3 does not have a dedicated complaints email, but you can escalate to the executive office at executive.office@three.co.uk (3 Community Forum). You can also try emailing the CEO directly at Robert.Finnegan@three.co.uk (source: @Three_Is_Broken on X).
3 Complaints by Post: Send a registered letter to: 3 Customer Complaints, Hutchison 3G UK Ltd., PO Box 333, Glasgow G2 9AG.
3 aims to answer most complaints within 7 working days. If you haven’t received a satisfactory response within 8 weeks, or you’ve received a “deadlock letter”, you can escalate your complaint to the Communications Ombudsman: PO Box 730, Warrington WA4 6WU — commsombudsman.org.
Source: 3 – How to Complain
3 Contact Details — Email, Phone, Live Chat and Social Media
Here is a summary of all the ways you can contact 3:
| Contact Method | Details |
|---|---|
| Phone (from 3 mobile) | 333 (free) |
| Phone (from any phone) | 03333 381 001 |
| Business Support | 0808 258 0333 |
| Live Chat | three.co.uk/support/contact-us |
| Contact Email | executive.office@three.co.uk |
| CEO Email | Robert.Finnegan@three.co.uk |
| Media Email | media@vodafonethree.com |
| X (Twitter) Support | @ThreeUKSupport |
| facebook.com/ThreeUK | |
| @threeuk | |
| Post (Complaints) | 3 Customer Complaints, Hutchison 3G UK Ltd., PO Box 333, Glasgow G2 9AG |
Social Media Support Opening Hours: Monday–Friday 8am–9pm, Saturday–Sunday 9am–8pm.
Important note: 3 cannot discuss individual customer account details on their social media pages for security reasons. For account-specific issues, use the Live Chat or phone support.
Source: 3 – Contact Us, 3 – Social Media Guidelines
3 Head Office Reading — Address and Location
3’s main head office is located in Reading, Berkshire at the Green Park business campus. The full address is:
450 Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF, United Kingdom
This is the company’s primary UK headquarters where the main management and corporate teams are based. Please note that this is a corporate office and not a retail store — for customer service enquiries, use the contact methods listed above.
Source: 3 Media Centre
3 Head Office Glasgow
3 also has a major office in Glasgow, Scotland. The address is:
123 St Vincent Street, Glasgow, G2 5EA
The Glasgow office handles various operations alongside the Reading headquarters. The complaints postal address (PO Box 333, Glasgow G2 9AG) is also based in Glasgow.
Source: 3 Media Centre
3 Head Office Dublin
3 Ireland (Three Ireland) operates separately from 3 UK, though both fall under CK Hutchison Holdings. The 3 Ireland head office is located at:
28/29 Sir John Rogerson’s Quay, Dublin 2, Ireland
If you’re a 3 Ireland customer, you should contact 3 Ireland directly rather than the UK head office.
About 3:
3 (also known as Three) is a British mobile telecommunications company that was launched on 3 March 2003 as the UK’s first commercial 100% 3G network. The company is formally known as Hutchison 3G UK Ltd. and is owned by CK Hutchison Holdings, a conglomerate headquartered in Hong Kong.
The history of 3 begins when Hong Kong tycoon Li Ka-shing, through Hutchison Whampoa, decided to re-enter the UK telecoms market. Hutchison had previously owned Orange, which they sold in 1999. They returned with a bold vision — a pure 3G network. The launch in 2003 was an aggressive move that turned 3 into a key player in the UK mobile market.
Over the years 3 has grown significantly, and as of 2025 operates approximately 289 stores across the UK.
The Vodafone Merger: On 31 May 2025, a historic merger between 3 UK and Vodafone UK was completed, creating VodafoneThree — the largest mobile network in the UK with over 27 million customers. The combined company has committed to a £11 billion investment over the next decade to develop its 5G network (Vodafone Press Release).
Source: 3 UK – Wikipedia
3 CEO — Who Runs 3 UK?
Robert Finnegan is the CEO of 3 UK and 3 Ireland. He took over from Dave Dyson, who stepped down in early 2020. Finnegan oversees both the UK and Irish operations under CK Hutchison’s telecoms division.
You can try to contact the 3 CEO by email at Robert.Finnegan@three.co.uk
Following the Vodafone merger in May 2025, the combined business VodafoneThree is led by CEO Max Taylor (Vodafone Press Release).
The Team at 3 UK:
Pre-merger (3 UK):
| Role | Name |
|---|---|
| CEO | Robert Finnegan |
| Chief People Officer (UK & Ireland) | Mark Redmond |
| General Counsel & Regulatory Affairs Director | Stephen Lerner |
Source: Bloomberg, 3 Media Centre
Post-merger (VodafoneThree) — from February 2025:
| Role | Name |
|---|---|
| CEO | Max Taylor |
| CFO | Darren Purkis |
| Strategy & Portfolio | Kelly Barlow |
| HR | Clare Corkish |
| Networks | Andrea Dona |
| Business | Nick Gliddon |
| Regulatory, Government Affairs & Company Secretary | Stephen Lerner |
| Corporate Affairs & Sustainability | Nicki Lyons |
| IT | Stephen Reidy |
Source: Vodafone UK Press Release
Frequently Asked Questions (People Also Ask)
Is 3 a British company?
3 UK is operated in the United Kingdom, but it is owned by CK Hutchison Holdings — a conglomerate based in Hong Kong. Following the merger with Vodafone (May 2025), the combined business VodafoneThree is 51% owned by Vodafone and 49% by CKHGT.
Where is 3’s Head Office?
3’s head office is located at 450 Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF. They also have an office at 123 St Vincent Street, Glasgow, G2 5EA.
What is 3’s customer service number?
333 from a 3 phone (free), or 03333 381 001 from any other phone.
Does 3 have a free 0800 number?
No. 3 does not offer an 0800 freephone number. The free option is to call 333 from your 3 mobile. From other phones, 03333 381 001 is charged at standard UK rates and is usually included in your plan’s minutes.
What is 3’s complaints email?
3 does not have a specific complaints email address. You can use their online complaints form, or escalate to executive.office@three.co.uk.
What are 3’s Live Chat opening times?
Monday–Friday: 8am–10pm. Saturday–Sunday: 9am–8pm.
