Pemsel joined ITV in 2005. Previous to this role he was the chief executive of creative agency Boymeetsgirl and the managing partner of St Luke's.
ITV recently announced it will cut 430 staff from its regional news operations in an attempt to save £40m a year.
The broadcaster is currently locked in a debate over its public service broadcasting licence obligations. Its executive chairman, Michael Grade, has publicly said ITV is struggling to uphold its pledge to maintain an annual £1bn investment in programmes.