EMEA chief executive Martin Liptrot said: ‘The UK and corporate technology MD role effectively no longer exists.
Stephen and I talked about the new challenges within the firm, but in the end he decided to leave.'
Liptrot said Ogilvy was ‘weeks away' from unveiling a newly structured corporate and tech practice. Clarke left Ogilvy late last month after two years and is not subject to a period of ‘gardening leave', Liptrot added.
Clarke was unavailable for comment but is not believed to have a new job lined up.
No other positions have been cut and the agency is not expecting any other departures as a result of the restructure, said Liptrot.
Just two months ago, associate director Justin Hayward left Ogilvy's corporate and tech practice to become Manning Selvage & Lee London's head of technology and telecoms (PRWeek, 16 June).