 The sovereign may appoint anyone a Privy Counsellor , but in practice appointments are made only on the advice of the Her Majesty 's Government , and generally consist only of senior members of Parliament , the Church of England and HM Judiciary . There is no statutory limit to its membership : at January 2012 , there were about 600 members ; they had risen in number to over 650 by June 2015 . 
