What was the date of Henry V111 church reform?

Henry VIII's church reform, primarily known as the English Reformation, began in earnest in 1534 when the Act of Supremacy was passed. This act declared Henry the Supreme Head of the Church of England, effectively breaking away from the authority of the Pope and the Roman Catholic Church. The reform was driven by both personal and political motives, particularly Henry's desire to annul his marriage to Catherine of Aragon.