Fixed-term Parliaments Bill

I am interested because I made this point in response to the comments by the noble and learned Lord, Lord Falconer. Will my noble friend accept that there is perhaps this issue? If there is a choice between immediate Dissolution and a resignation with the possibility of another Government being formed, who exercises that choice? In a Bill where we seek to take power away from the Prime Minister, should that choice lie with the Prime Minister or does my noble friend accept that we should look at ways in which what happened would not be the Prime Minister’s choice alone?