Cameron, who resigned as prime minister following the UK’s vote to leave the European Union, said he “did not want to be a distraction” to the new prime minister Theresa May.
Cameron has been MP for Witney since the 2001 general election. He became Conservative leader in 2005 and prime minister in 2010, initially in a coalition government and then a Conservative majority following the 2015 general election.
“As a former prime minister it is very difficult, I think, to sit as a backbencher and not be an enormous diversion and distraction from what the government is doing,” Cameron said following his decision.
In a statement, May said she was proud to serve in David Cameron's government, which had stabalised the economy and made great strides in delivering social reforms.
