https://www.republic.org.uk/a_new_head_of_state
> The kind of head of state we think is best for Britain is a 'ceremonial' or 'constitutional' position, someone chosen by the people to:
* represent the nation
* defend our democracy
* act as referee in the political process
* offer a non-political voice at times of crisis and celebration
> The job would not simply be ceremonial, our new head of state would have very clear and limited powers. Those powers would be non-political, which means that they can only be exercised according to certain official criteria. Our elected head of state would not be allowed to make decisions based on their own political opinions (much like a judge uses their power according to the law and the facts of the case, not letting their personal politics get in the way).