Where can this be seen?

In the US, it might be on Amazon Prime. I saw some of the other 1970s/1980s Austen BBC titles on Prime last week. They had p&p, Mansfield Park and Northanger Abbey. They likely have Emma too.

Here: https://www.youtube.com/playlist?list=PLVe_HgNacfDs6T1iNJakbRAhDYcBeOgzB