NSW Minister David Campbell has resigned from his road and transport portfolios this evening, citing personal reasons and apologising to his family and friends.

Mr Campbell's resignation came after accusations he used a taxpayer-funded government car to visit a gay sex club in the state premier’s eastern suburbs electorate.

Tonight Channel Seven aired footage of Mr Campbell allegedly visiting the club in Kensington, Ken’s at Kensington, on Tuesday night for about two hours.

Mr Campbell excused his driver and drove himself to the sex club in his ministerial car.