Just how hard can it be to talk for 60 seconds with no hesitation, repetition or deviation. Paul Merton, Sheila Hancock, Jan Ravens and Rufus Hound find out.

In this final episode of the current series Nicholas Parsons introduces the expert flannelling skills of Paul Merton, Sheila Hancock, Jan Ravens and Rufus Hound.

What exactly constitutes a hard hat is one of the many subjects up for fierce debate.

Hayley Sterling blows the whistle.

Producer: Richard Morris

A BBC Studios Production.