The most celebrated dispute was in 1973, over the banning of "The Friends and Influence of John L Poulson", the definitive film about the Poulson Affair, itself one of the defining scandals of British political life in the 1960s. Poulson was an architect, who was jailed a year later for corrupting politicians and civil servants to advance his construction business. The regulator, which was then the IBA, banned the film without seeing it and without giving official reasons other than "broadcasting policy". As a protest, Granada broadcast a blank screen – which bizarrely recorded the third highest TV audience of that week. After a public furore which saw newspapers from the "Sunday Times" to the "Socialist Worker" unite in condemnation of "censorship", the IBA held a second vote, having by then seen the film. By a single vote, the ban was lifted and the programme, by then retitled "The Rise and Fall of John Poulson", was transmitted on 30 April 1973, three months after it was first scheduled.