Former CEO Dido Harding is leaving the company in May after seven years . Current managing director Simon Harrison will take over the role , while Sir Charles Dunstone will become executive chairman after he steps down as chairman of Dixons Carphone in May. The announcement prompted TalkTalk shares to rise 20 % in early trading , having fallen by more than 20 % following a major cyber attack in 2015 . "I'm excited at the prospect of spending more time on TalkTalk," he added. TalkTalk was fined a record £ 400,000 for poor website security , which had facilitated the attack . Baroness Harding , a Conservative peer , said she wanted to focus more on her public service career .
Former CEO Dido Harding is leaving the company in May after seven years . Current managing director Simon Harrison will take over the role , while Sir Charles Dunstone will become executive chairman after he steps down as chairman of Dixons Carphone in May. The announcement prompted TalkTalk shares to rise 20 % in early trading , having fallen by more than 20 % following a major cyber attack in 2015 . TalkTalk was fined a record £ 400,000 for poor website security , which had facilitated the attack . Baroness Harding , a Conservative peer , said she wanted to focus more on her public service career .