Nigel Evans, the former deputy speaker of the House of Commons, has denied sexual offences against seven men.
Evans, the Conservative MP for Ribble Valley in Lancashire, entered formal not guilty pleas to all charges during a pre-trial hearing at Preston Crown Court.
The 56-year-old stood in the dock, hands clasped at his front, to repeat "not guilty" as each charge was put to him.
An extra count of sexual assault was added to the indictment, making nine charges in all.
He denies two counts of indecent assault, six of sexual assault and one of rape. The charges date from 2002 to April 1, last year.
Evans resigned as Commons deputy speaker after he was charged on September 10.
More top news
A drive to track down half a dozen of the region's worst criminals is being stepped up - and detectives are taking their message to Spain.
Rochdale MP Simon Danczuk says his battle to expose abuse left him depressed and helped wreck his marriage.
Police are searching for three men after a victim suffered fractured eye sockets in an attack outside a club in Manchester city centre.