In trading update, construction services specialist also announces order book of £750m.

Construction services specialist Interior Services Group (ISG) has updated investors on trading before it announces its results for 2006.

The company has revealed that it has enjoyed a period of "exceptionally high turnover" and that the order books stand at £750m, a figure which is an 18% increase compared with this time last year.

ISG has also highlighted its major project wins including Shell Centre, Norton Rose, Morgan Stanley and Nelson & Colne College.

The chairman of ISG, David King, is due to retire from the board at the end of June and will be succeeded by David Lawther, the group finance director.

The company will welcome a new group finance director, Jonathon Houlton, on 1 August. He was formerly finance director of Wates Group.