Geoff Unwin, chairman of United Business Media, is to leave the business information company at the end of 2007.
Unwin said: “UBM has a clear strategy and a first rate management team who are executing this strategy well. At the end of this year I will have served on the board for eleven years and chaired it for five, therefore I feel it is time, and an appropriate time, to move on. I am making my intentions known well in advance to allow the board to run an orderly succession process.”