Arcadia has appointed David Hagglund as creative director across Topshop and Topman in a newly-created role.
Hagglund will join the fashion retail group on September 4 from his eponymous agency, where he has been creative director for eight years.
His creative agency has worked with a range of big-name retailers including H&M, Esprit and Hugo Boss.
Both Phelan and Richardson will leave Arcadia later this year.
Arcadia tycoon Sir Philip Green said: “The appointment of David Hagglund, in the newly combined role, continues to mark the start of a new era for Topshop/Topman in moving both brands forward in their ongoing global expansion.
“I am delighted to welcome David who will be joining Paul Price, our new CEO, on the same day and I look forward to working with them both to drive the business forward.”
Hagglund’s appointment follows a spate of departures from the fashion empire, including Topshop managing director Mary Homer, who left to take the helm at The White Company in March.