Organix, a leading children's organic food company, has promoted Anna Rosier to replace founder Lizzie Vann as managing director.

Rosier, who is currently heading up the company's sales team, said Organix was the category innovator and she anticipated sales would continue to grow at a fast rate.

Since she joined the company in 2004, Organix's sales have grown by 74% and it intends to launch 15 new lines this year.

"We have a very stretching three-year plan in place, which includes more innovation, opening up new product categories, and driving business with our retail partners," she said. The company has made three other changes to the senior management team. All four appointments are effective from 1 February. The new head of sales will be Sara Alden-Court, who was SMA Nutrition's trade controller with responsibility for national account management and development teams.

Michelle Constantinou, previously at Bendicks, will become marketing manager. At Bendicks she was responsible for the strategic development, implementation and marketing support programme for the chocolate range, including the launch of their premium chocolate products, Bendicks Gorgeous and Mingles.

Ryvita's finance and IT controller Kevin Joy will take on the role of head of finance at Organix.

Vann, who founded Organix in 1992, will become chairwoman. She said she would continue to work closely with The Organix Foundation - a new charity dedicated to independent research into the links between food quality and children's health.

She was one of the original members of the Soil Association's Food for Life group, which campaigned to improve the quality of school meals.