O2 Customer Services Telephone Number

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0844 453 3558
Calls cost 7p per minute plus your phone company’s access charge. This is a call connection service and connects you to customer service department of your choice.
Company Details
Postal address, email, opening times, everything you need to create a written complaint.

O2 Customer Services,
Telefonica UK Limited Correspondence Department
PO Box 202 Houghton Regis, LU6 9AG
O2 Opening Times : Mon-Fri 8am-9pm | Sat-Sun 9am-5pm

Tel: 0844 453 3558

Calls are charged at 7p per minute plus your phone company’s access charge. This is a connection service and connects you to O2 customer service department. This site is not affiliated with O2 , read more about our service here.
About O2

Brief Overview of O2


O2 Customer Services Telephone Number

O2 is a British telecommunications company headquartered in London with its registered office at Telefonica UK Limited Correspondence Department, PO Box 202 Houghton Regis, LU6 9AG. O2 Operates in over 21 countries and has partner networks in over 40 other countries.


O2 is the UK’s largest telecommunications provider with over 23 million customers. They provide 2G, 3G and 4G networks throughout the United Kingdom, as well as offering O2 Wi-Fi and owning half of Tesco Mobile. O2 has a variety of own brand stores, a website and also sells through independent retailers across the UK.


Call O2 Customer Services Telephone Number for help and advice using your phone  


If you are an existing or new customer and would like to receive help and advice on the below O2 topics, call O2 today:

  • Finding the best tariff plans as per your requirement,
  • To report a loss of network in the net coverage,
  • To pay your bill,
  • Help setting up your broadband,
  • To update / cancel your contract(s) with O2,


If you are facing any other issues, do not hesitate to call O2 Customer Services Telephone Number – 0844 453 3558 to connect to the O2 customer services department.


Disclaimer: Support Phone Numbers is UK’s Phone book directory services and connects you to O2 customer support department. Calls are charged at 7p per minute. This site is not affiliated with O2. If you want to find out more about O2 and its products and services, you can click here to view their Official website.

O2 Customer Service FAQs
  • Q : How can I contact O2 Customer Service?
  • Ans :The quickest way to contact O2 is by using the telephone number at the top of the page. However, we have listed their address and website too if you’d like to try contacting them that way.
  • Q : How do I make a complaint to O2?
  • Ans :Here at Support Phone Numbers we recommend putting your complaint in writing to O2. A telephone call, followed by a written complaint could help your query be resolved more quickly. What’s more, you’ll have a written record of your communication with O2 for future reference should you need it.
  • Q : When is it best to contact O2?
  • Ans :The peak time for most companies receiving calls is around 5-6pm, so try and avoid lengthy call queues by contacting them during the day if possible. However, the full opening hours for O2 are Mon-Fri 8am-9pm | Sat-Sun 9am-5pm.
  • Q : How do I find more company details?
  • Ans :At Support Phone Numbers, we've listed a wide range of companies alongside their full contact details so that you don't have to scour the web for hours! Using our easy to navigate website you can quickly search for Customer Service details and live chat too! Simply enter the O2 you’re looking for and follow the instructions on screen.
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