In the 28 October 1955 final draft of the plan, Margaret would announce that she would marry Townsend and leave the line of succession. As prearranged by Eden Anthony, the Queen would consult with the British and Commonwealth governments, then ask them to amend the 1772 Act. Eden would have told Parliament that it was "out of harmony with modern conditions"; Kilmuir estimated that 75% of Britons would approve of allowing the marriage. He advised Eden that the 1772 Act was flawed and might not apply to Margaret anyway.
The Daily Mirror on 28 October discussed The Times's editorial with the headline "THIS CRUEL PLAN MUST BE EXPOSED". Although Margaret and Townsend had read the editorial the newspaper denounced as from "a dusty world and a forgotten age", they had earlier made their decision and written an announcement. On 31 October Margaret issued a statement: I would like it to be known that I have decided not to marry Group Captain Peter Townsend. I have been aware that, subject to my renouncing my rights of succession, it might have been possible for me to contract a civil marriage. But mindful of the Church's teachings that Christian marriage is indissoluble and conscious of my duty to the Commonwealth, I have resolved to put these considerations before others. I have reached this decision entirely alone, and in doing so I have been strengthened by the unfailing support and devotion of Group Captain Townsend. "Thoroughly drained, thoroughly demoralized", Margaret later said, she and Townsend wrote the statement together. She refused when Oliver Dawnay, the Queen Mother's private secretary, asked to remove the word "devotion". The written statement, signed "Margaret", was the first official confirmation of the relationship. Some Britons were disbelieving or angry while others, including clergy, were proud of the princess for choosing duty and faith; newspapers were evenly divided on the decision. Mass-Observation recorded indifference or criticism of the couple among men, but great interest among women, whether for or against. Kenneth Tynan, John Minton, Ronald Searle, and others signed an open letter from "the younger generation". Published in the Daily Express on 4 November, the letter said that the end of the relationship had exposed The Establishment and "our national hypocrisy".