2007年10月02日 格林尼治标准时间11:11更新
It's got twelve lines, four hundred kilometres of track and there are two hundred and seventy-five stations. Welcome to the London Underground or The Tube as people call it.
It looks complicated but it's not as difficult to use as you might think.
Neil and Jean find out how to use the system from the experts – people who use it every day.
Do you have a question about Britain?
你有没有对英国的疑问?
Then email us at chinaelt@bbc.co.uk or
欢迎你把问题通过电子邮件发给我们:chinaelt@bbc.co.uk