The civils and groundworking firm has left behind a string of creditors, some of which are thought to be owed hundreds of thousands of pounds.
The contractor, which operates mostly in the South and South East, specialises in partnering, social housing and healthcare. It recorded a turnover of ВЈ67m in 2007.
Mann says on its website that it handles contracts worth between ВЈ500,000 and ВЈ20m and works as a subcontractor to a number of major contractors including Willmott Dixon, Morgan Ashurst, Higgins, Carillion and Balfour Beatty.
It is understood that the firm entered administration voluntarily this week.
A spokeswoman confirmed that the firm had appointed administrators but the name of the administrator has not yet been confirmed.
Check ContractJournal.com for more updates as they emerge.
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