It has promoted Jo Grierson, Andrew Robinson and Melissa Hinds. They will join chairman Graham Lancaster and MDs Holly Ward, Belinda Taylor and Brian Beech on the board.
Grierson joined last year from Starfish Communications to head the agency's consumer practice. Robinson, associate director of the corporate and B2B practice, joined last year from College Hill.
Hinds has spent six years at Euro RSCG Biss Lancaster, and last year was promoted to business development director.
The agency was recently hired by British Waterways to generate coverage around the organisation's involvement in the regeneration of UK towns and cities.