Morton will remain deputy managing director and head of broadcast, but will hand over television duties to Hanlon, who has worked at M2M for more than five years.
Previously, Hanlon worked for CDP for three years as a TV manager, alongside M2M’s managing director Alistair McCallum. Prior to that, Hanlon was a buyer on McDonald's for Starcom and worked in sales for ITV.
He will report to Morton, who will be freed up to focus on key clients such as Paddy Power and LoveFilm.
Hanlon said: "With the merging of TV and online, this is an exciting time to be head of television and I am excited about helping us go forward and continue to do the job we’ve done in the past 10 years, for the decade to come."
In addition, account director Tanwa Edu has been promoted to business director, reflecting her increased responsibility across clients such as the Estée Lauder group and Uniqlo.
M2M has also recruited Simon Carr, previously account director at Vizeum, to head up the £15m Momentum Pictures account the agency won from Target Media at the end of 2009.