The video clip is suitable for good Intermediate students.
Watch the video and note down the five facts about London that are under discussion.
Watch the video a second time and try to get the general idea about what it is that we must know about these five facts on London. Don't bother about detail, just getting the general idea will do.
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For correction, you can read a very approximate trasncript taken from the NBC site here or you may decide to watch the clip on the NBC site, where you will also have the option to read this transcript or activate the CC subtitles.