One charge is an alleged indecent assault against a teenage girl aged 16 to 17 in Hammersmith and Fulham in 1991.
The second is an alleged sexual assault of an 18-year-old woman in Wandsworth in 2004.
The charges are in addition to those brought against him in October relating to seven women, which include four counts of rape.
The 68 year old pleaded not guilty to them.
