++ long process for bill to become act of parliament, ensures can be effectively scrutinised and checked for errors
++ first reading allows opposition to obtain copy of bill, prepare arguments for debate at second reading
++ whips ensure mps vote with party and agree with policies even if personally disagree as public vote for mp to represent them according to party they support
++ public bill committee scrutinise bill looking for errors and suggesting changes
++ house of lords contains many experts, 'safety net' as they often find errors house of commons have missed
++ house of lords may restrict governments powers but cannot prevent bill becoming law
++ acts of parliament receive royal crest, gives king role in parliament
++ private members bills allow backbench mps and members of opposition to create laws which government has not timetabled
-- lengthy process, some bills run out of time, reintroduced in next parliament or not at all, some rushed process and published containing errors eg. dangerous dogs act 1991
-- professor zander called first reading 'pure moment of nothing' (waste of time)
-- public bill committee always have majority of government mps on it, may control suggested changes
-- house of lords unelected therefore undemocratic
-- whip system seen as undemocratic, whips accused of bully tactics
-- role of king tradition, cannot refuse, staff often sign on behalf, stage seen as rubber stamping exercise
-- ballot restricts number of private members bills considered (20 per year) 10 minute rule prevents most from getting proper chance to explain, other mps filibuster