Use BBC.com or the new BBC App to listen to BBC podcasts, Radio 4 and the World Service outside the UK.

Find out how to listen to other BBC stations

Radio 4,1 min,

SeriesSeries 59

Inventing the wheel

I'm Sorry I Haven't A Clue

Contains some strong language.

Available for over a year

In an ancient version of Dragon's Den, the wheel is pitched for future business success.

Programme Website