Liberal Democrat Michael Moore has been replaced as Scottish Secretary by the party's chief whip Alistair Carmichael.
This is not going to be a Conservative Cabinet reshuffle, but among the junior ranks there will be some tinkering.
Chloe Smith was just 27 when elected MP in Norwich and became David Cameron's youngest minister when she was promoted two years later.
Conservative MP Matt Hancock has been appointed skills and enterprise minister.
Conservative MP Andrew Robathan replaces Mike Penning as Northern Ireland minister.
Andrew Robathan has been appointed as Minister of State at the Northern Ireland Office #reshuffle
BBC political correspondent Chris Mason said Mark Hoban won't miss "whispered conversations in corridors" after being sacked as employment minister.
The Employment Minister Mark Hoban says his sacking after 12 years on the front benches makes it "not his finest day."
Mr Hoban says he is is looking forward to the freedom to express himself in speeches "rather than whispered conversations in corridors"
Assistant whip Nicky Morgan, Conservative MP for Loughborough, has been appointed economic secretary to the treasury, replacing Sajid Javid.
Sports minister Hugh Robertson says he "doesn't know" if he's in for a new job as he enters Downing Street.
Conservative Treasury minister Sajid Javid has just entered Downing Street.
Northern Ireland minister Mike Penning has been moved to the Department of Work and Pensions.
Conservative MP Greg Clark has been reshuffled from financial secretary to the treasury to cities and constitution minister.
Conservative MP Esther McVey has been promoted from minister for the disabled to employment minister.
She was said to have "looked happy" as she left Downing Street.