Lai had been managing the fund since April 2006, taking over from Robin Parbrook. She will be replaced by the head of Asia ex Japan Louisa Lo. Lo will be assisted on the fund by Schroders head of research for Asia ex Japan Toby Hudson.
Lai joined Schroders as an investment analyst in 1996 and took on portfolio management in 2000. She has left the firm for personal reasons.
The Pacific fund is fourth quartile in its sector in the past 12 months.
Lo joined Schroders in 1996 and is manager of the offshore China and emerging Asia funds. She will also take on the management of the offshore ISF Pacific fund previously run by Lai.
Hargreaves Lansdown senior analyst Meera Patel says: “We have had this fund on sell for about a year now following a number of managerial changes. This, however, is a senior appointment in Louisa Lo who has strong performance on her funds recently so we will wait and see what she can do.”