New law allows first UK minister to take maternity leave
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The Attorney General for England and Wales, Suella Braverman, said she was "excited about making a little bit of history" to become the first "minister on leave", calling it "a landmark moment for the UK government".
Braverman will be replaced during her absence by one of her deputies, solicitor general Michael Ellis, Prime Minister Boris Johnson's office announced.
The government introduced a bill into parliament last month to change what it said were "clearly outdated" rules that would have forced Braverman to resign and hand over her duties.
Johnson, whose son was born last year, supported the change, as did Home Secretary Priti Patel and Cabinet Office minister Michael Gove.
"I hope it sends the message to young women who are interested in pursuing a career in politics that having a young family isn't out of bounds to them if they wish to work in senior roles," said Braverman in a video message.