Contact us
There are many ways you can talk to us
It's free to call our UK-based Business Customer Service teams anytime.
You can contact your dedicated, UK-based, Business Customer Services team free of charge from both your landline and mobile phone. You will find the number to contact on your bill.
If your mobile phone’s been lost or stolen, call us straight away on 08705 214000. We’ll stop anyone from making any more calls.
There are other, easy ways to get help from O2 Business Customer Services:
Fully comprehensive and constantly reviewed FAQs on every aspect of O2's service.
To start using our 24/7 online help, click on the link below.
Online Help
Blocked phone?
If your mobile phone is displaying a message that your phone is "blocked" or is requesting a Phone Unblocking Key (PUK) code then you will need to obtain a code from O2.
Nuisance calls
O2 can help and support customers who receive nuisance calls.
How to make a complaint
If you’re not happy, we want to know. We need and value your comments on how to do better, so that we can improve our services for the future.