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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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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.