The document discusses business population dynamics and the drivers of small firm growth. It notes that the UK business population experiences high churn, with around 250,000 new firms born and over 200,000 dying each year. The most important factor for firm performance is age, with over 80% of new firms dying by age 10 and most growth occurring within the first 5 years. While 90% of new firms have less than 5 employees, high-growth firms (HGFs) and small high-growth firms (SHGFs) disproportionately contribute to job creation, with each group creating about 40% of new jobs despite being a small percentage of firms.