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O2 Business – Contact us

Existing O2 Business Customers

If you're already an O2 business customer, whatever your query, our Customer Service Team can help you get more from our service. And you can contact us, free of charge, from either your landline or mobile phone. Call us on 0800 977 7337, or just dial 8002 from your mobile.

Alternatively, you can use our 24*7 Online Help service. It's packed with useful O2 FAQs and should answer any of your questions.

New to O2?

If you're not an O2 business customer, and would like to be, our Business Team will also respond quickly to any sales enquiries you might have. There are a number ways to get in touch.

If you'd like 10 or less devices:

  • Phone 0800 028 0202 to speak directly to one of our O2 Business Sales Representatives,
    Monday to Friday 9am to 6pm

Or, if you need more than 10 devices:

  • Or you can contact an O2 Business Sales Manager in your area – call 0800 0280 202
    or email: