LONDON (AP) — The British prime minister's office says it is treating with "utmost seriousness" a television producer's allegation that she was sexually assaulted inside 10 Downing St., the official office for Britain's leader.

Daisy Goodwin, who created royal period drama "Victoria," says a government official groped her breast while she was visiting Downing St. to discuss a proposed television program. She says she did not report the incident, which happened during the 2010-2016 administration of Conservative Prime Minister David Cameron.

Goodwin told Radio Times magazine that recent abuse revelations made her reconsider her silence.

Cameron's spokesman said he was "alarmed, shocked and concerned" and had informed the Cabinet Office, which investigates allegations of misbehavior in politics.

Prime Minister Theresa May's spokesman said Tuesday the government treated all allegations "with the utmost seriousness."