国际英语新闻：London underground strike over jobs affects 3 million passengers

Johnson on Tuesday afternoon in an interview for the BBC called for legislation to stop strikes in key areas, particularly to stop strikes taking place during the 2012 Olympics. He said, "What I want to see is the government to take action to look at the threshold for these unions to call a strike."

The strike ended at 9 p.m. on Tuesday evening, and although knock-on effects are predicted to continue into Wednesday the underground system is expected to be back almost to normal quickly.