Jo Moore joins from St Luke's to run the Safeway account, which the agency won from Bates following a pitch in July.
The agency also appointed Sarah Gold, Lowe's new-business director, two weeks ago. Gold will run the agency's Tango account, as well as work on new business. She has secured an equity stake in the agency, and becomes part of its management team.
Moore, who takes up her position on 30 September, was a senior account handler at St Luke's, initially looking after its Fox's Biscuits and Midland Bank accounts.
Latterly, she was involved in its Swedish operation, looking after its Telia business. She was instrumental in the agency's successful pitch for the Emirates account, which she has been running this year, and she has also been working on St Luke's Tilda rice business. She has been with the agency for five years.
Johnny Hornby, a partner at CHI, said of Moore: "She is very passionate. I'm interested in her strong ideas on how to get a team working together, which is very important for Safeway. Agencies like St Luke's have challenging cultures so she is bringing some good ideas with her."
Gold's hiring came at a bad time for Lowe as she was the account director on its £43 million Orange account. Her resignation has been instrumental in the agency losing the business, which is now up for pitch. She has been at Lowe for nine years, latterly working as a board account director before being promoted to new-business director in February.
Hornby pointed out that Gold has worked with fellow agency founder Charles Inge, as well as the creatives Micky Tudor and Brian Turner, all of whom joined the agency from Lowe. He added: "She's got lots of energy and is a very determined person."
CHI's wins this year include Premier Foods, Butchers Petfoods, Tango, Heineken, Safeway and P&O's Ocean Cruises.