Bill Cosby's appearance on The Late Show With David Letterman has been cancelled in the wake of rape allegations levelled at the television star. Cosby was scheduled to appear on the show on Wednesday (19th November).

Bill Cosby
Bill Cosby photographed in January 2014.

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The allegations first came to light when comedian Hannibal Buress claimed Cosby had raped several women and advised his audience to "Google it". A video of Buress' comments went viral and Cosby has been under scrutiny for a month. A number of women have come forward and claim they were victims of Cosby's. 

One woman, former actress Barbara Bowman, claims Cosby raped her and she has published an opinion piece in the Washington Times. The piece, entitled 'Bill Cosby raped me. Why did it take 30 years for people to believe my story?', alleges Cosby drugged and raped her whilst acting as her mentor when she was a teenager. Bowman's allegation also refers to a case in 2005 in which Andrea Constand filed a lawsuit against Cosby for alleged sexual assault, according to NY Times

Another woman, Tamara Green, claims Cosby drugged and sexually assaulted her in 1970. Now a retired attorney, Green spoke to People about the allegations and stated she believes Cosby should apologise. Green said "He [Cosby] needs to say, 'I am a flawed character. I let stardom go to my head. I'm an older and wiser man and I want to apologize to the people that I have hurt.' How hard can that be?" 

Bill Cosby
Cosby's appearance on Letterman has been cancelled.

Cosby has refused to answer questions about the allegations. In an interview with NPR, recorded last week, Cosby remained silent as the interviewer asked a number of questions about the claims. The 77-year-old also appears to be avoiding chat show appearances as Letterman is the second show he has cancelled or from which he has been dropped. In October, Cosby did not appear on The Queen Latifah Show as planned. 

The NY Times reached out to The Late Show With David Letterman for comment, hoping to ascertain whether Cosby had dropped out of the show or if his appearance had been cancelled. The show confirmed Cosby would not be appearing on the show but refused to disclose the reason. A representative for the show stated, "We can't comment on the booking process." 

Read More: Bill Cosby's New NBC Show May Be Debuting As Soon As Next Summer.

Bill Cosby
Allegations as Cosby go back decades.