Media, which is handled by Optimedia, is not believed to be under review.
The company's recent UK television advertising has focused on adapting TV campaigns created by Euro RSCG Mezzano Costantini Mignani in Italy. However, the company is looking to do UK-specific advertising that will help it achieve cut-through and compete in a competitive market that includes brands such as Thorntons and Ferrero.
The brand had a heavyweight TV ad push in the run-up to Easter and, before that, in the run-up to Christmas, as it aims to establish a strong retail presence in the UK.
Beatrice Robertson, the marketing manager at Lindt Chocolate UK, said: "We are at a very early stage. It's not in the public domain and I wouldn't want to comment at all about it."
Both Thorntons and Ferrero back their brands with UK-specific advertising.
Thorntons uses Miles Calcraft Briginshaw Duffy, while Ferrero uses Banks Hoggins O'Shea/FCB.