Has to follow the advice of the Prime Minister.
Can only listen to ministers of the Government.
Other politicians from other parties can't have an audience with them to give their view.
The Monarch can't really refuse to follow the advice.
Other countries have Heads of States who have to protect the Constitution. We have a Monarch who has to be a figure head, rubber stamp person.
(please note - this is about the Monarch as an instution, not the Queen as a person)