A former special adviser to ex-Defence Secretary Sir Michael Fallon has appeared in court charged with sexual assault.
It is alleged that while appearing to be under the influence of alcohol, he put his hands up her skirt and touched her intimately.
Mr Holden, from south-east London, denies the charge.
He was employed as a media adviser until earlier this year and had previously worked in a number of roles for the Conservatives, He also spent several years in the Tory press office.
He appeared at Westminster Magistrates Court and is due to appear at Southwark Crown Court on 3 January.
Mr Holden is due to appear at Southwark Crown Court on 3 January.