There were also failures, however. The epic "Churchill's People", twenty-six fifty-minute episodes based around Winston Churchill's "A History of the English-Speaking Peoples", was deemed unbroadcastable by Sutton after he had viewed the initial episodes, but so much time and money had been invested in huge pre-transmission publicity that the BBC had no choice but to show the plays, to critical derision and tiny viewing figures. Never again would a fifty-minute series be given a run as long as twenty-six episodes, for fear of being too committed to a project: runs of thirteen became the norm, although in later years even this began to be considered quite long. Plays such as Dennis Potter's "Brimstone and Treacle" and Roy Minton's "Scum" were not broadcast at all due to fears over their content at the highest levels of the BBC, although despite this Potter continued to write landmark drama serials and one-offs for the Corporation throughout the rest of the decade and into the 1980s. Both "Brimstone and Treacle" and "Scum" were eventually transmitted some years later.