Contact us

We're here to help

Want to find out more about how your organisation and O2 can work together?

Find out how we can help you with enterprise-scale technology that puts your people first. With enterprise experts and public sector champions at the ready, you will get answers to the questions that really matter to your organisation.

Call us on 0800 955 5590.

Or give us your details and we'll get in touch with you.

Want to ask us a question?

It's about my O2 Enterprise account

Telephone numbers and contact hours

Business Team

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 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
Online Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7027 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 are 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.
† Free from an O2 Business mobile, other providers' charges may vary.

Join O2

O2 Consumer mobile phone sales Number Charges
From any phone 08442 02 02 02 5p / min†
Opening times
Monday – Friday 08:00 – 21:00
Weekend 09:00 – 17:00
O2 Business sales Number Charges
More than 10 phones
or:
Less than 10 phones 0800 028 0202 Free
Opening times
Monday – Friday 09:00 – 17:00
† 5p per minute from a BT landline, other providers' charges may vary.

O2 Travel Insurance

We no longer sell travel insurance to new customers, but if you have an existing policy don't worry, you're still covered.

If you already have O2 Travel Insurance:

Find out how this affects you


Get in touch:

For any of these existing policies, we're still here to help if you need medical assistance or to make a claim. Here are the numbers:

24 Hour Emergency Services:

Phone outside your home country: +44 20 8239 3902

Phone within your home country: 020 8239 3902

Claims:

0844 463 02 02. Lines are open Monday to Friday 8.00am to 6.00pm

If you have any questions regarding your policy, please call customer service:

0844 463 02 02. Lines open Monday to Friday 9.00am to 5.00pm.

… or if you want to write to us

For phone, broadband or other O2 services:
Telefónica UK Limited
Correspondence Department
PO Box 202
Houghton Regis
LU6 9AG

Not happy about something? Find out how to complain

It's about the mobile or wifi network

Telephone numbers and contact hours

Business Team

Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7337 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
Online Business Customer Service Number Charges
From your O2 mobile 8002 Free
From a landline 0800 977 7027 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 are 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.
† Free from an O2 Business mobile, other providers' charges may vary.

Join O2

O2 Consumer mobile phone sales Number Charges
From any phone 08442 02 02 02 5p / min†
Opening times
Monday – Friday 08:00 – 21:00
Weekend 09:00 – 17:00
O2 Business sales Number Charges
More than 10 phones
or:
Less than 10 phones 0800 028 0202 Free
Opening times
Monday – Friday 09:00 – 17:00
† 5p per minute from a BT landline, other providers' charges may vary.

O2 Travel Insurance

We no longer sell travel insurance to new customers, but if you have an existing policy don't worry, you're still covered.

If you already have O2 Travel Insurance:

Find out how this affects you


Get in touch:

For any of these existing policies, we're still here to help if you need medical assistance or to make a claim. Here are the numbers:

24 Hour Emergency Services:

Phone outside your home country: +44 20 8239 3902

Phone within your home country: 020 8239 3902

Claims:

0844 463 02 02. Lines are open Monday to Friday 8.00am to 6.00pm

If you have any questions regarding your policy, please call customer service:

0844 463 02 02. Lines open Monday to Friday 9.00am to 5.00pm.

… or if you want to write to us

For phone, broadband or other O2 services:
Telefónica UK Limited
Correspondence Department
PO Box 202
Houghton Regis
LU6 9AG

Not happy about something? Find out how to complain

It's about an O2 service I'd like more information on

Find out how we can help you with enterprise-scale technology that puts your people first. With enterprise experts and public sector champions at the ready, you will get answers to the questions that really matter to your organisation.

Personal users – if your question is about your own phone (Pay Monthly or Pay & Go) or O2's consumer services find out more

Small and medium sized businesses – if you’re a sole trader or have under 2000 employees then find out more