BT has confirmed that its in talks to buy O2 UK, Telefonica’s UK mobile network. The deal would take the company full circle since O2 began life in 1985 as Cellnet, a joint venture between BT and Securicor. BT told The Wall Street Journal: “All discussions are at a highly preliminary stage and there can be no certainty that any transaction will occur.” BT struck a deal with EE last year to use the latter’s 4G network. ➤ BT [via The Wall Street Journal]