Rumpole of the Bailey debut on 17 December 1975 to good reviews by the critics. Aware of the potential for further stories centred on Rumpole, Irene Shubik approached the BBC's Head of Plays, Christopher Morahan, and obtained permission from him to commission a further six "Rumpole of the Bailey" scripts from John Mortimer. However, Morahan left his post at the BBC a short time later and his successor was not interested in turning "Rumpole of the Bailey" into a series. At around this time, Shubik was contacted by Verity Lambert, Head of Drama at Thames Television, who was looking for ideas for an up-market
Rumpole of the Bailey interest in nineteenth-century anarchists, especially the Russian Peter Kropotkin from whom the title of the play was drawn. The character's name was later changed to Horace Rumpole when it was discovered that there was a real barrister called Horace Rumbold. The title of the play was briefly changed to "Jolly Old Jean Jacques Rousseau" before settling on the less esoteric "Rumpole of the Bailey". Mortimer was keen on Michael Hordern for the role of Rumpole. When Hordern proved unavailable, the part went to Australian-born actor Leo McKern. Mortimer was initially unenthusiastic about McKern's casting but changed his opinion upon seeing