Cook said Burmester, who took over from Mottershead as chief of the UK source market in April, was leaving for “personal reasons”.
He will return to Germany to be closer to his family before taking up a role with Kuoni parent DER Touristik next May.
Since April, Mottershead has been concentrating on his group-wide role as chief of product and operations, but now takes back the role as UK chief “with immediate effect”.
MORE: Thomas Cook chief of UK source market Ingo Burmester to leave business
The move amid a turbulent week for Cook during which its share price more than halved at one point following its “disappointing” financial results, which Cook has attributed to the summer heatwave and poor performance of itsUK tour operating division.
Mottershead will work alongside Anth Mooney, who will continue to report to Cook’s chief executive Peter Fankhauser following his promotion to the newly-created role of chief of UK retail and money.
Fankhauser said: “I want to thank Ingo for his contribution to Thomas Cook.
"Given the critical importance of turning around the performance of the UK business, I have decided to hand back the leadership of the UK source market to Chris Mottershead for the time being.
“I am confident his experience running a British holiday company, along with Anth’s absolute focus on our retail and money business, will help to accelerate the UK’s return to profitable growth.”
