Previously, media and most creative work was handled in-house. However, since the arrival of Tan Suee Chieh as the chief executive, the company has been looking to enhance its status.
Recently, it hired the former Coca-Cola and Unilever marketer Lynette Ang.
She said BBH and PHD had "demonstrated their strategic competencies and ability to take Income to the next level through our very rigorous evaluation". The pitch included the creative agencies Bates and DDB, which previously handled projects for the company, as well as Universal McCann, Starcom and ZenithOptimedia.