Topman’s global digital director is moving to Arcadia bedfellow Miss Selfridge to become its multichannel director.
Rees-John joined Arcadia in 2013 as its head of ecommerce, before being promoted to his current role in 2014.
He previously spent eight years at M&S in a variety of roles and also did a stint advising South Africa’s Woolworths.
Rees-John’s move comes as Arcadia restructures. The retailer, owned by Sir Philip Green, has put 300 roles into redundancy consultation, including some that are currently vacant and will now not be filled.
Arcadia has been through a tough time of late with erratic trading, negative publicity surrounding the collapse of BHS, which was formerly owned by Green, and turbulent conditions for high street fashion all affecting the business.
Arcadia also suffered from a spate of senior departures earlier this year.
Long-time Topshop managing director Mary Homer became one of the most high-profile exits when she quit to join The White Company in March. Burton boss Wesley Taylor, Evans managing director Fiona Ross and Miss Selfridge creative director Yasmin Yusuf have also left the group.