The agency won the business after a final pitch against M&C Saatchi. The process was handled by the COI.
DLKW, the incumbent, and Leo Burnett were also involved in the pitch but were knocked out at an earlier stage.
The agency will be briefed with creating campaigns aimed at educating young people about teenage pregnancy, sexual health and contraception. The work will involve engaging a broader audience including teachers, parents, young people and health workers.
The work is due to break later this month.