The shake-up at the top of property firm DTZ under new chief executive Paul Idzik continued today with the resignation of finance director Colin Child.

The 50-year-old will leave his £160,000-a-year job - topped up last year with a £140,000 bonus - at the end of July after less than two years.

His exit marks the latest in a line of changes at DTZ since former Barclays chief operating officer Idzik took over from Mark Struckett last November. A number of ex-Barclays bankers have joined "Club Idzik" at DTZ.

It follows a disastrous two years at the once-mighty firm which saw its shares crash 98% from a peak of 835p in January 2007 to a low of 19¼p in late 2008. They were down ½p to 35½p today.

DTZ recently raised £48.7 million from shareholders as profits collapsed in the face of the property slump. The firm has suffered from rising levels of debt following the £40 million takeover of rival Donaldsons at the top of the market.

Child, a former finance director of Stanley Leisure and National Express, said he is seeking "new challenges" following the fundraising.