It is understood that the review is being handled directly by the client.
JWT has produced some memorable work for Kenco during its 10 years on the account, including its multi-award winning "Coffee vs gangs" campaign, under the agency's previous executive creative director Russell Ramsey.
The review follows Kenco shifting its UK media and planning account from Havas Media to Carat last year.
In 2014 Douwe Egberts merged with Mondelez’s coffee business to create a business that united the US company’s Carte Noire, Kenco, Millicano and Tassimo brands under the same roof as the Dutch company’s Douwe Egberts coffee and Senseo coffee capsules.
Neither Mondelez nor JWT returned a a request for comment.