At the midday service on 1 March 1922, J. A. Kensit, leader of the Protestant Truth Society, got up and protested against the form of worship. The proposed changes to the church in 1924 led to a hearing in the Consistory Court of the Chancellor of the Diocese of London and an appeal to the Court of Arches. Judgement was given by the latter Court in October 1924. The advowson was purchased in 1931, without the knowledge of the Rector and Parochial Church Council, by the evangelical Sir Charles King-Harman. A number of such cases, including the purchase of the advowsons of Clapham and Hampstead Parish Churches by Sir Charles, led to the passage of the Benefices (Purchase of Rights of Patronage) Measure 1933. This allowed the parishioners of St Magnus to purchase the advowson from Sir Charles King-Harman for £1,300 in 1934 and transfer it to the Patronage Board.