Yvette Cooper told BBC Breakfast that in both cases, the prime minister chose figures who "aren’t in the national interest.”
“It really looks like we have got more of the same. That is not good enough," she said.
Ms Braverman was reappointed as home secretary just days after she was forced to quit over a security breach, and Sir Williamson was given his seat at the table amid a bullying investigation.
Sign up for our newsletters.