Civil service chief, Sir Bob Kerslake, and senior Eland House directors must take responsibility for a turnaround in low staff morale at the DCLG, according to a renowned workplace psychologist.

Professor Cary Cooper's warning followed analysis of the 17 main Whitehall departments in the civil service people survey 2011, which ranked the DCLG joint-bottom for staff engagement, with a 40% approval rating – an 8% decrease since 2010.