Westwick, who plays salesman Vincent Swan in the sitcom, has been accused of sexual assault. Two women have separately posted accounts on social media claiming they were raped by the Gossip Girl star during the time he lived in America.
Westwick has strongly denied the claims, posting on a statement on Twitter explaining he is looking to clear his name as soon as possible.
With Westwick playing the sitcom's lead role, the future of the entire comedy is now in doubt.
The BBC has also removed Ordeal By Innocence, an Agatha Christie drama that stars Westwick, from its festive schedules. A BBC spokesperson told the press: "These are serious allegations which Ed Westwick has strenuously denied. The BBC is not making any judgement but until these matters are resolved we will not include Ordeal By Innocence in the schedules."
White Gold Series 1, which was broadcast in May and June, performed very strongly for the network. The programme is BBC Two's biggest comedy launch of the year, and - after publishing all six episodes online in a 'box set' after the first episode was broadcast - became one of the most watched UK comedy shows online.
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