FTSE 100 information solutions firm Reed Elsevier has announced that chief financial officer Mark Armour is to retire from the board at the end of next year.Armour, who joined the group in 1995 and took up his current position a year later, said: "After 15 years as Chief Financial Officer I have decided it is right to announce my planned retirement now in order to give the company sufficient time to appoint my successor and arrange an orderly transition."Reed Elsevier, who just two weeks ago acquired US financial services compliance specialist Accuity Holdings for £343m, said it will begin the process of finding Armour's successor."I would like to thank Mark for his major contribution to the group over the past 16 years. Mark has been tireless in helping drive the transformation of Reed Elsevier into a leading digital solutions business. We wish him all the best for the future," said chairman Anthony Habgood.BC