The change comes as a result of a comprehensive review of the trade body by its director Lee Baker, who took up his role in September.
Faircliff, who was appointed as co-chair in February, becomes the first sole chair since Simon Waldman, who stepped down at the beginning of this year. He is the general manager of consumer media at Thomson Reuters.
Collins, who was appointed as co-chair in September, is group director of Trader Media Group.
Baker said: "It was felt that with my role now bedded in, the co-chair structure, whilst operating effectively during 2009 has added unnecessary structure for the current requirement of the AOP."
Baker's review also recommends managing a process for the AOP to operate independently of the Periodical Publishers Association, .
The review was made with the full consultation of the co-chairs, the executive board and members.
United Kingdom
AOP to drop co-chair structure
LONDON - The Association of Online Publishers has abandoned its co-chair structure a year after introducing it, with Trader Media Group's Dominic Collins stepping down and Tim Faircliff becoming sole chair.