A handful of senior managers leave, including managing director of contractor鈥檚 investment group

A handful of senior managers have left contractor Laing O鈥橰ourke as part of an overhaul of the firm鈥檚 senior management team.

好色先生TV understands the departures include Lisa Scenna, managing director of the Explore Investments Group, the contractor鈥檚 PFI and asset management business.

It is understood that Duncan Symonds, infrastructure operations director, Lee Marks, commercial director, Paul Copeland head of rail, and David Hills, construction director, have also left.

A Laing O鈥橰ourke spokesman did not deny the departures, but said: 鈥淲e are not going to go into the individual details鈥.

He added: 鈥淎 handful of senior managers have left over recent months as our overall priorities and requirements have changed with the market.

鈥淎t the same time, we have had a number of senior people join the business recently, which have been reported on.鈥

好色先生TV that the contractor had hired Nick Down, the former boss of Carillion鈥檚 Middle-Eastern business, as one part of a wide-ranging senior management reshuffle.

In addition Laing O鈥橰ourke鈥檚 northern UK boss, Callum Tuckett, took a new job as business unit leader for the UK construction business.

Earlier this year Laing O鈥橰ourke announced it had hired former Olympic Delivery Authority construction boss Howard Shiplee, although it has not confirmed his exact role.

The changes are the latest in a series of reshuffles since the departure of Tony Douglas, former chief operating officer, in 2009 allowing chairman and chief executive Ray O鈥橰ourke to retake direct control of the firm鈥檚 operations.

The reshuffle appears to show the 拢3.3bn turnover firm refocusing following a period of turmoil. In the 2011 financial year the publicity shy firm laid off more than 5,000 of its 17,000 European staff.

Laing O鈥橰ourke has had recent success winning contracts to build the 拢340m Cheesegrater tower and a 拢600m biomedical research facility in King鈥檚 Cross, but it was forced to wind down its housing development arm due to low demand this year.