The agency has previously worked with Celerant on an informal basis, but will now work on a retained basis.
Hanover is tasked with demonstrating Celerant's expertise in the energy, private equity and telecommunication sectors, along with its ability to address the challenges facing top business leaders.
"The current challenging economic climate provides us with the ideal opportunity to do so, as increasing operational efficiency and delivering measurable value from consulting is now a key focus for businesses across all sectors," sais Charles Lewington, Managing Director at hanover.
Over the past 20 years, Celerant has become the largest independent specialist player in the field of operations management. Over that 20-year period the firm has completed over 700 projects in 98 countries and in 2007 delivered over €600m/$1bn in sustainable savings for its clients.