I didn't follow any of those links much farther than to get the basics of the sites. At the "pet" series they were speaking English, but as Robyn says, it was highly accented.

Ian La Frenais is known to American viewers of PBS and probably the A&E and other mystery channels as a writer of the Lovejoy series.

I did see a lot of YouTube information about Whately and fundraisers, but I didn't follow those. That may be where you find the performances mentioned for charity.

SRS