JAA hired Talon after identifying synergies between the two companies, following a competitive pitch process involving Rapport. Posterscope chose not to repitch for the business.
Although the partnership will officially begin on 1 January 2014, Talon will start working with the agency on its clients’ plans for next year straight away. JAA’s clients include Macmillan Cancer Support and King of Shaves.
JAA has worked with Posterscope since 2009.
John Ayling, the chairman and managing director of JAA, said: "We were highly impressed by the very experienced senior team and account group put forward by Talon. There is a strong synergy between our client base and Talon’s ambition and we are looking forward to a very hands-on relationship."
Talon, which is led by the chief executive Eric Newnham, has been growing in size since last year and took over the planning and buying of Omnicom Media Group agencies from Posterscope at the beginning of April 2013.