Variation of share rights requires a petition with shareholder authority and detailed disclosure of voting and class rights. A petition to cancel a variation of class rights must annex letters of authority from entitled shareholders and a Schedule with names, addresses and shareholdings. It must state registration and share-capital particulars, classes and their rights, the memorandum or articles provision authorising the variation, the total shares of the affected class, the nature of the variation, and, as far as ascertained, the numbers of shareholders and shares consenting or dissenting, with dates and reasons for opposition.