The new company called Virgin Media O2 says the switch means Virgin Mobile customers will get more data and extra benefits this year.

From February, the company will start sending communications to the first group of Virgin Mobile customers to let them know that their current service will transfer over to a new O2 plan.

As part of this migration, millions of customers will receive unlimited texts and voice calls, and either double the data or unlimited data for the same amount each month.

Virgin says no mobile customers will see the cost of their plan rise as a result of the move. 

Once migrated to O2, Virgin Mobile customers will get access to Priority from O2 and other O2 benefits such as continued inclusive EU roaming.

Virgin says the move will occur “seamlessly” and over the air for the vast majority of customers with no need to replace SIMs, port phone numbers or change billing dates or information. 

Exact details of the changes and steps will be outlined clearly to individual customers at least 30 days ahead of their migration taking place. 

Migrations will occur throughout the year, and by the end of 2023 all existing and newly joined Virgin Mobile customers will have been moved to O2 plans.

All Virgin Mobile customers are already using the O2 network, since the entire Virgin Mobile base transferred over to using the O2 network last year. 

Virgin Mobile will continue to offer flexible handset contracts and 30-day rolling SIM only plans this year. However, the firm is yet to decide how the Virgin Mobile brand will be used in the future.

Gareth Turpin, chief commercial officer at Virgin Media O2 said: “This is a major milestone moment for Virgin Media O2 as our Virgin Mobile customers start moving over to O2 plans, receiving added value and benefits on top. 

“Our teams will guide customers through every step of the migration, and we’re laser focused on making sure this all occurs in the most hassle-free way possible. With all of our mobile brands now powered by the award-winning O2 network, we are making fantastic progress in our integration plans while continuing to deliver a range of knockout mobile services that cater for all needs.”