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Tell us what you want to talk about and we'll let you know your options. 

About your O2 Business account or Billing

Telephone numbers and contact hours

 

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 Free
From abroad +44 808 100 4439 Free
Opening times
Monday - Friday 08.00 - 20.00
Saturday & Sunday 09.00 - 17.00
Bank Holidays 10.00 - 16.00
If you're managed by a local partner please contact your partner
Limited service outside of these hours is available if you have lost or had your mobile phone stolen, or if you have a fault on your O2 landline.
Calls from abroad are free from an O2 Business mobile, other providers' charges may vary.
International & Roaming

Telephone numbers and contact hours

 

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 Free
From abroad +44 808 100 4439 Free
Opening times
Monday - Friday 08.00 - 20.00
Saturday & Sunday 09.00 - 17.00
Bank Holidays 10.00 - 16.00
If you're managed by a local partner please contact your partner
Limited service outside of these hours is available if you have lost or had your mobile phone stolen, or if you have a fault on your O2 landline.
Calls from abroad are free from an O2 Business mobile, other providers' charges may vary.
Business Apps

Telephone numbers and contact hours

 

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 Free
From abroad +44 808 100 4439 Free
Opening times
Monday - Friday 08.00 - 20.00
Saturday & Sunday 09.00 - 17.00
Bank Holidays 10.00 - 16.00
If you're managed by a local partner please contact your partner
Limited service outside of these hours is available if you have lost or had your mobile phone stolen, or if you have a fault on your O2 landline.
Calls from abroad are free from an O2 Business mobile, other providers' charges may vary.
Devices

Telephone numbers and contact hours

 

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 Free
From abroad +44 808 100 4439 Free
Opening times
Monday - Friday 08.00 - 20.00
Saturday & Sunday 09.00 - 17.00
Bank Holidays 10.00 - 16.00
If you're managed by a local partner please contact your partner
Limited service outside of these hours is available if you have lost or had your mobile phone stolen, or if you have a fault on your O2 landline.
Calls from abroad are free from an O2 Business mobile, other providers' charges may vary.
Broadband & Landline

Telephone numbers and contact hours

 

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 Free
From abroad +44 808 100 4439 Free
Opening times
Monday - Friday 08.00 - 20.00
Saturday & Sunday 09.00 - 17.00
Bank Holidays 10.00 - 16.00
If you're managed by a local partner please contact your partner
Limited service outside of these hours is available if you have lost or had your mobile phone stolen, or if you have a fault on your O2 landline.
Calls from abroad are free from an O2 Business mobile, other providers' charges may vary.
Network

Telephone numbers and contact hours

 

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 Free
From abroad +44 808 100 4439 Free
Opening times
Monday - Friday 08.00 - 20.00
Saturday & Sunday 09.00 - 17.00
Bank Holidays 10.00 - 16.00
If you're managed by a local partner please contact your partner
Limited service outside of these hours is available if you have lost or had your mobile phone stolen, or if you have a fault on your O2 landline.
Calls from abroad are free from an O2 Business mobile, other providers' charges may vary.
It's about something else

Telephone numbers and contact hours

 

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 Free
From abroad +44 808 100 4439 Free
Opening times
Monday - Friday 08.00 - 20.00
Saturday & Sunday 09.00 - 17.00
Bank Holidays 10.00 - 16.00
If you're managed by a local partner please contact your partner
Limited service outside of these hours is available if you have lost or had your mobile phone stolen, or if you have a fault on your O2 landline.
Calls from abroad are free from an O2 Business mobile, other providers' charges may vary.
I want to talk to someone

Telephone numbers and contact hours

 

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 Free
From abroad +44 808 100 4439 Free
Opening times
Monday - Friday 08.00 - 20.00
Saturday & Sunday 09.00 - 17.00
Bank Holidays 10.00 - 16.00
If you're managed by a local partner please contact your partner
Limited service outside of these hours is available if you have lost or had your mobile phone stolen, or if you have a fault on your O2 landline.
Calls from abroad are free from an O2 Business mobile, other providers' charges may vary.
Prefer to write to us?

Here’s the address, if you’d rather drop us a line:

O2 Correspondence Team
PO BOX 694
Winchester
SO23 5AP

I want to find an approved O2 Partner

Go to our Partner Network page here to find an approved O2 Partner

I want to find a Franchise

Go to our Franchisees page here.

 

Other ways to find answers

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Download the My O2 app

To check your data and manage your account from your phone.

Phone with My O2 on the screen

Download the My O2 app

To check your data and manage your account from your phone.

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We're just checking to see if there's an available agent.

 

Not happy about something?

Tell us what's gone wrong and we'll try to make things better.
See how to make a complaint, or take a look at our Customer Complaints Code.