Looking it up De Keyser is basically just the 5th Amendment but a hundred and fifty years later. Congrats UK, the government can’t take your stuff without paying for it. Attorney-General v De Keyser's Royal Hotel Limited is a leading case in UK constitutional lawdecided by the House of Lords in 1920 which exhaustively considered the principles on which the courts decide whether statute has fettered prerogative power.[1] It decided that the royal prerogative does not entitle the Crown to take possession of a subject's land or buildings for administrative purposes connected with the defence of the realm without paying compensation. It is the authority for the statement that the royal prerogative is placed in abeyance (is not used) when statute law can provide a legal basis for an action.[2] https://en.m.wikipedia.org/wiki/Attorney-General_v_De_Keyser's_Royal_Hotel_Ltd
