That's part 1 , a section of the BBC documentary shown across last Sunday and Monday which in total was c. 2 hours long.
Here's part 2 :
http://www.youtube.com/watch?v=qkOUavq8Yy8Part 3 :
http://www.youtube.com/watch?v=XHkYU6jdysgPart 4 :
http://www.youtube.com/watch?v=qIDKWf6jkvEPart 5 :
http://www.youtube.com/watch?v=6q1vC7CE0_QPart 6 :
http://www.youtube.com/watch?v=0zvYG2iOKsII think that is probably the whole of the first episode so there must be more to come - so, keep watching the listings on Youtube for about another 6 or maybe 7 more 10 minute segments.