Introduction: context, issues, and case study selection -- Contributions of entrepreneurial firms -- Theoretical insights i : economic approaches -- Theoretical insights ii: sociological and psychological approaches -- "Types" of entrepreneurs i: habitual entrepreneurs -- "Types" of entrepreneurs ii: high technology and academic entrepreneurs -- "Types" of organisations i: family firms -- "Types" of organisations ii: corporate entrepreneurship -- "Types" of organisations iii: management buyouts -- Types of organisations iv: social entrepreneurship -- External environmental context : drivers and barriers -- Entrepreneurial finance -- International entrepreneurship -- Outcomes : enterprise barriers, growth and performance.