Labour has gained Bermondsey & Old Southwark from incumbent Liberal Democrat Simon Hughes.
Mr Hughes was Justice Minister and a former deputy leader of the party, and had represented the area since 1983.
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.