Last updated at 16:37

Theresa May: What's on the next prime minister's to-do list?

To enjoy the CBBC Newsround website at its best you will need to have JavaScript turned on.

Theresa May will become prime minister later today, taking over from David Cameron in Downing Street.

But what are some the challenges she will face, and what's on her to-do list?

Newsround spoke to top political reporter Adam Fleming to find out more.