This London firm, founded in 2000 by Octavius Black, 49, and Sebastian Bailey, 42, blends psychology with marketing to create bite-sized training courses for employees. The company says 61 of the FTSE 100 and 53 of the S&P 100 are customers, including Unilever. It works in more than 30 countries, and international sales hit £15.2m in 2016, boosted by strong growth in America.

Company details
Year
Rank151
CompanyMind Gym
ActivityCorporate learning provider
LocationCentral London
Staff158
Founded2000
Websitewww.themindgym.com