Andy Burnham is set to become the U.K.¡¯s seventh prime minister in just over a decade on Monday with a number of outstanding questions about who will be in his Cabinet and the policy direction he will pursue.

In an address from Downing Street, the incoming prime minister will pledge to deliver tangible improvements in people¡¯s lives, while stressing that his rise to high office is a moment for ¡°reflection and resolution,¡± according to advance remarks sent by his office. He will set out his domestic priorities, and conclude on a ¡°message of optimism¡± saying Britain can look to the future with ¡°hope and unity.¡±

Despite securing the backing of the vast majority of his party¡¯s members of Parliament last week, Burnham has already irked a swath of his party by refusing to give certainty on who he¡¯ll appoint to key Cabinet positions including chancellor of the exchequer, and what policies he¡¯ll pursue to mark his administration out as significantly different from that of the man he is replacing, Keir Starmer.