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Already an O2 Business customer?

You can find answers quickly on our help and support pages. Or if you need to speak to someone, the easiest way is to chat online.

Or you can call us free on 0800 028 0202 or 8002 from your O2 mobile.

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About your O2 Business account

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Telephone numbers and contact hours

Business and Enterprise

Business customer service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 028 0202 Free
From abroad +44 844 809 0200 Free
Opening times
Monday - Friday 08:00 - 20:00
Saturday 09:00 - 17:00
Sunday 09:00 - 17:00
Enterprise customer service
Contact your account manager
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.

How to buy

Quickest way to get in touch

Give us a moment

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

Live Chat - Busy

All our agents are currently busy, please try again later.

Live Chat - Offline

The service is currently offline.

Telephone numbers and contact hours

Business and Enterprise

Business customer service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 028 0202 Free
From abroad +44 844 809 0200 Free
Opening times
Monday - Friday 08:00 - 20:00
Saturday 09:00 - 17:00
Sunday 09:00 - 17:00
Enterprise customer service
Contact your account manager
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.

Not happy about something?

Tell us what's gone wrong and we'll try to make things better. See how to make a complaint.