The John Cleese film widely regarded as the precursor to Monty Python is to be released on DVD next month.

How To Irritate People combined also featured Michael Palin and Graham Chapman, as well as future Goodie Tim Brooke-Taylor and Fawlty Towers's Connie Booth, making her acting debut.

It was produced by David Frost in 1968, and recorded like a stage show, and in front of a live audience.

One of the sketches - Silly Job Interview - was used in Monty Python, and another, about a disgruntled car showroom customer, formed the basis for the Parrot Sketch.

The 65-minute DVD, released by Sanctuary Visual Entertainment, also includes a new interview with Frost.

It will be released on September 30. Click here to preorder from Amazon.co.uk