1) The presentation summarizes research from the Enterprise Research Centre (ERC) on high-growth firms in the UK. 2) It finds that while start-ups are important, most job growth occurs within the first 5 years as firms scale up. Established small and medium enterprises growing to the next size level also contribute significantly to job growth. 3) Regional differences exist in start-up rates and business dynamics across the UK. Tailored local support policies are needed to foster scaling across different stages of growth in each local economy. Developing leadership skills in small businesses is key to facilitating continued growth.