David Cameron has called for an investigation into claims that Daisy Goodwin was groped in Number 10 as he said he was "shocked" by the allegations.

The former Prime Minister said that the first he knew of the claim that an official touched the breast of the TV producer was after she wrote an article describing the encounter.

Mr Cameron informed the Cabinet office who will "thoroughly investigate any complaint made", his spokesman said.

It is understood that Number 10 have been attempting to contact Ms Goodwin.

She has claimed that she was "summoned" to Downing Street to discuss a proposed TV show when Mr Cameron was Prime Minister and the official told her she looked like a Bond girl before putting his hand on her breast as she went to leave.

Ms Goodwin, a novelist, television producer and scriptwriter, said that she did not report the matter as she was "cross" rather than traumatised and felt that her humiliation of the official was sufficient.

Mr Cameron's spokesman said: "David Cameron was first made aware of this serious allegation yesterday.

"He was alarmed, shocked and concerned to learn of it and immediately informed the Cabinet Office.

"As is usual practice, the Cabinet Office will thoroughly investigate any complaint made."