Allegra Stratton has been confirmed as Downing Street’s new press secretary, Sky News understands.
The former journalist will be responsible for fronting daily news conferences held by the government.
She became director of strategic communications to Rishi Sunak earlier this year, following his promotion into Number 11.
Ms Stratton is credited with sharpening up the chancellor’s social media presence and launching the “Eat Out To Help Out” meal discount scheme.
A former Guardian political correspondent and Newsnight political editor, she spent five years at ITV News as national editor and co-presented Peston on Sunday with Robert Peston.