Prior to this merger, Carphone Warehouse Group was listed on the London Stock Exchange, and was a constituent of the FTSE 250 Index.

[3] In April 2021, the Carphone Warehouse business in Ireland (including all stand-alone and co-located branches and the website) was closed with immediate effect.

[7][8] In 1990, Dunstone brought in his school friend David Ross, a chartered accountant,[6][9] who became Chief Operating Officer in the same year.

[16][17] Also in that month, it was announced that Geek Squad would be launching in the United Kingdom, in a 50/50 joint venture between Carphone Warehouse and Best Buy.

In April 2020, products and services from the O2 network ceased to be available from Carphone Warehouse after the companies were unable to reach a contractual agreement.

[4][29] The company stated the closures were in line with the decision to close all UK stores the previous year, with the changes in the mobile market and customer shopping behaviour being accelerated by the COVID-19 pandemic.

[30] On 8 May 2009, Carphone Warehouse agreed to pay £236m in cash for the United Kingdom assets of Tiscali, an Italian telecoms group.

[36][37] During April 2005, customers who bought mobile phones from Carphone Warehouse retail outlets alleged that their landline accounts were subsequently switched without their consent.

[38] On 15 August 2006, the Information Commissioner's Office issued Preliminary Enforcement Notices for breaches of PECR (The Privacy and Electronic Communications Regulations) against Carphone Warehouse and TalkTalk for making marketing calls to people who were signed up to the Telephone Preference Service (TPS) or people who had asked that the company make no further calls to them.

We've got a big case coming up.On 5 August 2015, hackers gained access to customer data for 2.4 million people who had used sites operated by Carphone Warehouse, including OneStopPhoneShop.com, e2save.com, Mobiles.co.uk and TalkTalk Group.

Intruders were able to access personal information, including the names, addresses, phone numbers, dates of birth, marital status and, in more than 18,000 cases, historical payment card details of customers of Carphone Warehouse.

[49] In October 2001, Carphone Warehouse established a corporate partnership with Get Connected UK, a confidential helpline service for young people, that continues today as "The Mix".

[50] Carphone Warehouse supplies Get Connected with office and helpline equipment and has been instrumental in ensuring it is free to call from all landlines and mobiles.