Outgoing Justice Secretary Chris Grayling is set to become Leader of the House of Commons in the Prime Minister's cabinet reshuffle.
He will take on responsibility for the Government's constitutional reforms including the further devolution of powers to Scotland and legislation to give English MPs a veto over England-only laws at Westminster.
Mr Grayling told the Sunday Telegraph, "We will keep our promise to create the strongest devolved government anywhere in the world for Scotland".
"But there can't be a complete constitutional settlement for the United Kingdom unless it also offers fairness to England. We are all passionate about safeguarding the Union and all of this is essential to preserving it for the future."
Mr Grayling is being replaced as Justice Secretary by Michael Gove who returning to the Cabinet table.
It was one of the last big Cabinet jobs to be announced but the Prime Minister has chosen to stick with Jeremy Hunt as Health Secretary.
Prime Minister David Cameron has today continued to put together his new cabinet. Here is what the new-look cabinet looks like so far.
David Cameron was unsurprisingly in a great mood as he spoke to journalists before addressing his 331 Conservative MPs today.