We work with over 7,000 top organisations all over the world. Many are listed on the FTSE 100 or Euro 300, or are leading public-sector organisations. Read the case studies, view more clients or see what our clients have to say about us.

"Our work with OPP on identifying and developing high-potential managers is helping us deliver on leadership development... We refer to OPP's reports to supplement our decision making around future promotions."

Teresa Frost
Personnel Manager
Siemens

More testimonials >>

Here's just a small list:

NHS [Case study]	Siemens [Case study]	DIAGEO [Case study]
Gucci [Case study]	Unipart [Case study]	Ernst & Young [Case study]

DVLA [Case study]	Forca [Case study]	The British Library [Case study]

ACT Management [Case study]	FSI Law [Case study]	RAF [Case study]
See more clients >>