McCann Erickson has promoted Chris Macdonald, its client services director, to managing director.
The move is designed to strengthen McCann's senior management team, which has been without a managing director since Nick Wright left the agency in December 2004.
Macdonald, 38, joined McCann from Rainey Kelly Campbell Roalfe/Y&R in January last year. During the past 12 months, he led the team that won the Bisto and Sharwood's business and has run the UK American Airlines account.
McCann London's chief executive, Stephen Whyte, said: "Chris has been a hugely positive influence. His promotion will allow me to spend even more time with clients and on new business."
Macdonald began his career in 1990 at DMB&B. He then moved to Lowe Howard-Spink, where he worked on Vauxhall, and later to Publicis, as its head of account management. He joined RKCR/Y&R in 2000 as a managing partner, with responsibility for News International, Virgin Mobile, Schweppes and Lloyds TSB.
Macdonald's appointment is the latest in a series of management changes at McCann. In December last year, Robert Campbell, the executive creative director and vice-president, left the ag-ency. He was replaced by the executive creative director team of Brian Fraser and Simon Learman.
In July last year, Wright reunited with the former McCann creative director Luke White to launch a start-up called My Agency.
The creatives Kes Gray and Dean Webb have also left McCann, to concentrate on book projects.