Spark has appointed the interim chief executive officer of MediaWorks as its new chief financial officer.
David Chalmers will be a member of the Spark leadership team reporting to managing director Simon Moutter.
Formerly chief financial officer of MediaWorks, Chalmers was appointed interim chief executive after the departure of Mark Weldon.
He was thought to be a front-runner for the chief executive position at MediaWorks, alongside Australia-based media boss Michael Anderson.
He will succeed Jolie Hodson at Spark, who has moved to become CEO of Spark Digital.