 The most noted prerogative power that affects the judicial system is the prerogative of mercy , which has two elements : the granting of pardons and the granting of nolle prosequi . Pardons may eliminate the " pains , penalties and punishments " from a criminal conviction , though they do not remove convictions themselves . This power is commonly exercised on the advice of the Secretary of State for the Home Department ; the monarch has no direct involvement in its use . Exercises of this power may also take the form of commutations , a limited form of pardon where the sentences is reduced , on certain conditions . The granting of a pardon is not subject to judicial review , as confirmed by Council of Civil Service Unions v Minister for the Civil Service , but the courts have chosen to criticise its application or lack thereof , as in R v Secretary of State for the Home Department , ex parte Bentley . Granting nolle prosequi is done by the Attorney General of England and Wales ( or the equivalent in Scotland or Northern Ireland ) in the name of the crown , to stop legal proceedings against an individual . This is not reviewable by the courts , as confirmed by R v Comptroller of Patents , and does not count as an acquittal ; the defendant may be brought before the courts on the same charge at a later date . 
 The most noted prerogative power <a href='null_relcl' title='1'><mark>that</mark></a><a href='uninflect' title='2'><mark>affects</mark></a> the judicial system <a href='drop_aux' title='3'><mark>is</mark></a>the prerogative of mercy , which <a href='got' title='4'><mark>has</mark></a> two elements : the granting of pardons and the granting of nolle prosequi . Pardons may eliminate the " pains , penalties and punishments " from a criminal conviction , though they do not remove <a href='negative_concord' title='5'><mark>convictions</mark></a> themselves . This power is commonly exercised on the advice of the Secretary of State for the Home Department ; the monarch <a href='got' title='6'><mark>has</mark></a> no direct involvement in its use . Exercises of this power may also take the form of commutations , a limited form of pardon where the sentences is reduced , on certain conditions . The granting of a pardon <a href='negative_concord' title='7'><mark>is</mark></a> <a href='negative_concord' title='8'><mark>not</mark></a>subject to judicial review , as confirmed by Council of Civil Service Unions v Minister for the Civil Service , but the courts <a href='been_done' title='9'><mark>have</mark></a> chosen to criticise its application or lack thereof , as in R v Secretary of State for the Home Department , ex parte Bentley . Granting nolle prosequi is done by the Attorney General of England and Wales ( or the equivalent in Scotland or Northern Ireland ) in the name of the crown , to stop legal proceedings against an individual . This <a href='negative_concord' title='10'><mark>is</mark></a> <a href='negative_concord' title='11'><mark>not</mark></a>reviewable by the courts , as confirmed by R v Comptroller of Patents , and <a href='uninflect' title='12'><mark>does</mark></a> not count as <a href='None' title='13'><mark>an</mark></a><a href='negative_concord' title='14'><mark>acquittal</mark></a> ; the defendant may be brought before the courts on the same charge at a later date . 
Da most noted prerogative power affect the judicial system the prerogative of mercy , which got two elements : tdagranting of pardons and the granting of nolle prosequi . Pardons may eliminate thda pains , penalties and punishments " from a criminal conviction , though they do not remove no convictions theyself . This power is commonly exercised on thedavice of the daretary of State fir the Hda Department ; the monarch got no direct involvement in its use . Exercises of dis power may also take the form of commutations , a limited form of pardon where the sedances is reduced , on certain conditions . The gradang of a pardon ain't subject to judicial review , as confirmed by Council of Civil Service Unions v Minister for the Civil Service , but the courts done chosen to criticise its application or lack thereof , as in R v Secretary of State fir the Home Department , ex parte Bentley . Granting nolle prosequi is done by the Attorney General of England and Wales ( or the equidaent in Scotland or Northern Ireland ) in the name of the crown , to stop legal proceedings against an individual . Tdisain't reviewable by the courtda as confirmed by R v Comptroller of Patents , and do not count as no acquittal ; the defendda may be brought before the courts on the same chdae at a later date .