The brand consultancy will be responsible for developing a new identity and packaging for GlaxoSmithKline's Poligrip, Polident and Corega brands.
The brands form part of GlaxoSmithKline's oral health business, which also includes brands such as toothpaste brand Aquafresh, mouthwash brand Astriginsol and toothbrush brand Dr Best.
GlaxoSmithKline acquired the Poligrip, Polident and Corega brands three years ago when it bought Stafford Miller.
The win follows work the agency Blue Marlin has just completed on redeveloping Cadbury Schweppes' Schweppes bottles and labels. The project saw Blue Marlin develop a modern version of the classic 1783 egg-shaped soda bottle.
Earlier this year, Blue Marlin revamped organic dairy brand Yeo Valley Organic in an effort to broaden the appeal of its products.
The redesign included a new logo incorporating a green tick formed from blades of grass, which is now being applied to all products.
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