Alister Jack has been named the new Scottish Secretary by Boris Johnson , just two years after being elected as a Member of Parliament.
The 56-year-old was voted in as representative for Dumfries and Galloway in 2017 and replaces who served in the Scotland Office for nine years.
Scottish Conservatives leader Ruth Davidson said he had "big shoes to fill, but Alister Jack brings huge experience from outside government into Dover House".
She added: "He has the Scottish party's full support in his new role as Secretary of State."
Jack unseated the SNP's Richard Arkless in the 2017 election with an 11.2% swing and 43.3% of the vote - holding a majority of 5,643.
In April this year he was made a Government whip having served as an assistant for two months and as a parliamentary private secretary before that.
Jack's appointment to the Government came just hours after Mundell was removed from the role as Johnson axed a huge swathe of Theresa May's cabinet.
Mundell said he was "disappointed but not surprised" to be leaving the Government.
The long-serving Tory MP previously said he would find it "extremely difficult" to serve under Johnson.
However sources close to the former Scottish secretary said he had been prepared to stay in the Cabinet, despite differences with the new Prime Minister.
Mundell announced his departure from the Government on Twitter, pledging he would "of course" support Johnson's administration.
