See here for a playlist which I think has all the videos. Splitting the seminar into smaller parts is a good idea, but I wish they would number the parts, or make the whole talk available as a one hour video.
Here is one segment – bored of or bored with. The dictionary gives a warning about its usage.
Michael Rundell – editor in chief of Macmillan dictionaries – so certainly has the credentials. Quite an interesting series of videos, although he’s not the greatest speaker. He has a few digs at newspaper columnists / personalities who fear the declining standards of English, which for a non-British / non-native speaker audience is not so relevant.