Investment company Alliance Trust has named Legal & General man Alan Trotter as its new finance director.Trotter is currently group corporate development director at L&G and also responsible for the UK central finance function. He'll join Alliance Trust in early 2010.The 41-year-old qualified as a Chartered Accountant with Ernst & Young in 1993 where he specialised in financial services. He then held senior financial roles with a number ofScottish financial services institutions. "His extensive experience in the financial services sector and a proven track record in senior positions in the industry make him an ideal candidate to take on the role of finance director of Alliance Trust," said chairman Lesley Knox.Alliance increased net asset value by 6.8% in the half-year and achieved total shareholder return of 8.8%.