35 WOMEN UNDER 35 2016: Rachael Flanagan, 29 

Defying naysayers who questioned the wisdom of becoming a self-employed cleaner, Flanagan started her business aged just 18. Three years later the company had 20 staff. Now Mrs Bucket Cleaning Services has a turnover of £2.5m, 300 employees, 250 clients and four offices in South Wales and Bristol. Flanagan has won the FSB’s Young Entrepreneur Award.