 Dicey 's opinion that any action of governance by the monarch beyond statute is under the prerogative diverges from Blackstone 's that the prerogative simply covers those actions that no other person or body in the United Kingdom can undertake , such as the dissolution of Parliament . Case law exists to support both views . Blackstone ’ s notion of the prerogative being the powers of an exclusive nature was favoured by Lord Parmoor in the De Keyser ’ s Royal Hotel case of 1920 , but some difficulty with it was expressed by Lord Reid in the Burmah Oil case of 1965 . A clear distinction has not been necessary in the relevant cases , and the courts may never need to settle the question as few cases deal directly with the prerogative itself . 
