Published last month, the performance improvement agency was ranked in 44th place out of 100, proving that it is one company that practises what it preaches.
Among the results, 84% of the staff at P&MM felt their manager talked openly and honestly with them, while a similar proportion felt he or she trusted their judgement.
The company also ranks 13th in the category of managers deploying their staff talent.
"This achievement demonstrates the power of having informed and motivated staff," said P&MM HR director David Lebond. "It's translated into a strong business performance with sales and profits up.
"If we cannot show our clients that we have a good working model ourselves, how can we expect them to trust us with their own staff? We believe this will help us win more employee communication and motivation projects."
P&MM employees 125 people at its head office in Milton Keynes.