The BBC is set to issue a tender for the business in the next month. A pitch is expected to follow in the autumn ahead of an appointment in early 2006.
The corporation appointed the three agencies in December 2000. The roster can be in place for a maximum of five years, after which the BBC is required to hold a statutory review.
The review will be overseen by Tim Davie, the BBC's director of marketing.
AMV is the lead agency across all television work. DFGW is the strategic and creative lead agency for the BBC's children's and sports output, as well as for digital, while Fallon is the strategic agency for the BBC's youth brands and for its radio and music channels.
The review will not affect the corporation's roster of media agencies.
Nobody from the BBC was available for comment as Campaign went to press.