The vacuum cleaner manufacturer talks about his commercial secrets.
he inventor of the clockwork radio divulges his business acumen.
Chef Raymond Blanc shares his tricks of the trade.
The secrets of bookshop owner Christopher Foyle.
Tricks of the trade from Barry Cunningham , the publisher who discovered JK Rowling.
The boss of Yo! Sushi, Simon Woodroffe, reveals secrets of his success.
The chief executive of Ann Summers lingerie stores reveals all.
The entrepreneur known as "the Plumber" divulges his trade secrets.
The ex-Conservative MP discusses his business secrets.
The founder of Planet Organic confesses her business secrets.