Embattled Turnbull government MP Mal Brough is quitting politics after his involvement in the Peter Slipper affair put an early end to his return to the frontbench.

Mr Brough stood aside from the ministry in December and was dropped altogether this month amid an ongoing Australian Federal Police investigation into his role in allegedly procuring copies of the official diaries of Mr Slipper, the former Speaker.

While he has long maintained he will be cleared of wrongdoing, Mr Brough announced on Friday he would not re-contest his Queensland seat of Fisher.

"I thank the people of Fisher for their support at the last election and the trust they placed in me to be their voice in Canberra. It has been a privilege and honour to represent this generous community," he said in a brief statement.