O2 Head Office




O2 Contact Numbers

O2 Phone Number
Head Office 0844 453 0127
Customer Services 0843 557 4518
Complaints 0843 557 3365

O2 Customer Care Line Opening Hours

Department Opening Hours
Head Office Monday to Saturday 8am to 9pm, Sunday 9am to 7pm

O2 UK Head Office Address

Department Head Office Address
O2 UK Head Office 260 Bath Road,
SL1 4DX,
United Kingdom

O2 UK is the UK branch of multinational telecoms giant Telefonica. Based out of its head office in Slough, O2 provides one of the most thorough and diverse telecoms service packages available in the UK.

Why would I need to call the O2 head office contact number?

You may need to call the O2 head office contact number if you need information, would like to make an enquiry, or if:

  • You want to arrange joining O2 or taking out a new O2 contract
  • You are having SIM card trouble or phone hardware issues.
  • You would like to apply for O2 travel insurance or your O2 wallet.
  • You need to arrange travel allowances for your contract.
  • You need to discuss provision of O2 broadband services.
  • You need to speak to a customer service team member about the various O2 business communication solutions available to find out which one is right for your business.
  • Reporting a problem to customer service, or complaining about your O2 Business package.
  • You are having trouble with your O2 broadband connection.
  • You wish to change or cancel your O2 Broadband and Home Phone package.
O2 Business
O2 Business

Why Would I Call The O2 Head Office Contact Number?

You may wish to call the O2 Head Office Contact Number for any number of reasons, including:

  • Making an enquiry about billing or contracts
  • Resolving problems with your SIM card or device
  • Arranging O2 travel insurance or other financial services like the O2 Wallet
  • Arranging roaming data and coverage or enquiring about travel allowances
  • Enquiring about or arranging O2 broadband services
  • Getting advice and information about which of O2s business accounts is right for what you need
  • Registering a complaint or reporting a problem
  • Flagging an issue with broadband connectivity or supply
  • Cancelling your contract, your home broadband or your phone package
  • Negotiating a better deal on your contract

What Advantages Can O2 Offer Me?

O2 is the second-largest telecomms provider, internet service provider and broadcaster in the UK, and can offer both contract tariffs and pay-as-you-go options ot its customers. In addition to broad coverage and fast, reliable internet connectivity, O2 provides a robust, diverse rewards scheme to its customers, with thousands of offers available every week on the O2 Priority Moments Scheme. That makes them potentially, the single best value-for-money companies in the UK – they have partnered with Livenation to offer priority live event tickets at drastically reduced prices, offer discounts in hundreds of stores and allow customers to manage finances easily using O2 Wallet, an app with allows quick, simple financial management through a smartphone.

To discuss the available deals and offers being provided by O2, just call the O2 Head Office Contact number on 0844 453 0127.

Alternative ways to contact O2

The easiest way to get in contact with O2 is by using their dedicated customer contact line, 0844 453 0127. This line is available for over 12 hours per day, every day, so whenever you need to contact the O2 Head Office, you’ll be able to get through. However, if you can’t call, it may be more convenient to use an alternative method.

If you don’t want to use the O2 Head Office telephone number, you can email the company instead, or send a message via Twitter or Facebook. ALternately, you can contact the O2 Head Office by sending a letter directly there:

260 Bath Road,
SL1 4DX,
United Kingdom

O2 Priority Moments

O2 offers all of its customers access to the revolutionary O2 Priority Moments scheme, a free service to customers which gives them access to thousands of money-off deals and offers in hundreds of stores and locations around the UK.

These deals are made possible by O2’s ongoing partnership with a huge number of other businesses, allowing daily deals to be made to customers on a huge range of things from cups of coffee to electronics, event tickets and travel. As a result of these partnerships, with companies such as Boots, Livenation, Caffe Nero and Marks & Spencer, they are potentially the best value for money out of any network provider operating in the UK today.

For the price of your contract, or your pay-as-you-go tariff, the customer has access to potentially unlimited money-saving deals across a wide range of experiences and products.

A Brief History of O2


O2 was first founded in 1985 as Cellnet, the first mobile phone network provided by BT. It was founded as a 60/40 split between BT and Securicor, who pooled resources and information to make the new network a reality. In 1999, BT announced that it was buying out Securicor’s 40% share, taking full control over the now-established company.

Since then, O2 worked tirelessly to remain at the forefront of UK telecoms, eventually being bought over by Spanish comms juggernaut Telefonica, in 2005. With Telefonica’s support, O2 began to diversify, taking a step into the financial sector with the O2 Wallet in 2009, and establishing its lucrative O2 Priority Moments deal network the year following.

However, the network’s expansion was not without trouble, and in 2012 O2 had to apologise to almost 8 million customers after a mass network failure rendered the customers unable to connect to the O2 system for several days. In response, all affected customers were compensated, with contract customers receiving a 10% discount on their next bill, and pay-as-you-go customers getting 10% extra free at their next top-up.

Since 2015, BT has been in talks to potentially re-acquire O2, while confirming that it is simultaneously in talks to buy O2’s fiercest rival, EE. EE is the only telecoms company in the UK which is larger or more successful than O2 – a merger would result in both companies enjoying almost unlimited reach and power.

Naturally, such a move has face backlash from anti-monopoly laws, which have opposed it on the grounds of fair competition and customer protection.

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