Costerton will take charge of around 250 staff and will start work in the job on 1 May. She is widely credited with playing a major role in bringing in H&K's recent win of a European contract for Intel (PRWeek, 17 February).
Costerton, a former head of H&K's UK corporate team, took up her
London-based tech EMEA role almost 18 months ago (PRWeek, 24 September 2004).
The role represents a rapid rise for Costerton, who joined H&K six and a half years ago as a director in its tech team. She was formerly MD of tech agency Abacus PR. Prior to Abacus she spent eight years at QBO, working with clients including Norwich Union.
Her role reports to H&K chairman and CEO across EMEA Andy Laurence, who has spent the past few weeks interviewing both internal and external candidates for the role.
Cohn & Wolfe chairman David McLaren, who was chairman of H&K until December 2004, described the appointment of Costerton, who is thought to be popular with H&K staff, as 'inspired'.
Costerton said it was a 'new era' for the agency.