"Ready When You Are, Mr. McGill" is the first episode of British anthology television series Red Letter Day which aired on 11 January 1976, written by Jack Rosenthal, and produced by ITV.

While filming, a collection of comical mishaps (including the extra's repeated failure to deliver the line properly) occur to create chaos on-set.

The story is centred on the making of a film starring Amanda Holden as a police officer and Bill Nighy as an increasingly frustrated director.

Rosenthal said his rewrite had turned the drama into a criticism of television executives, and argued that "the industry has gone crazy and it needs a new generation to change it into something better".

[6] In April 2005 she challenged the management of ITV to show the film as a tribute to Rosenthal, threatening to kill them if it was put in a slot outside primetime.