WORLD BRIEFING / BRITAIN

London Mayor Boris Johnson, on an evening bicycle ride, rescued a woman who was being threatened by a group of girls wielding a metal bar, the mayor’s office said.

Documentary filmmaker Franny Armstrong was confronted by the teenage girls, who pushed her against a car Monday night as she was walking in North London, news reports said.

She said she saw Johnson on his bicycle and shouted to him. Johnson picked up the metal bar, which was more than a yard long, and cycled after the girls, Armstrong said.

He then returned to escort Armstrong home.

“He was my knight on a shining bicycle,” she said.