This article calculates some facts for the ‘knowledge economy’. Using new data, first we document UK intangible investment and find that (i) this is greater than tangible investment by £37bn in 2008; (ii) R&D is 11% of total intangible investment, software 15%, and training and organizational capital 22% each; (iii) the most intangible‐intensive industries are manufacturing and financial services. Next, we measure the contribution of intangible capital to growth for 2000–08. We find that intangible capital accounts for 23% of labour productivity growth and treating intangibles as investment lowers total factor productivity growth in the 2000s by 24% (R&D lowers it by 3%).