The program is Bargain Hunt Series 48: 19. Hungerford 11
https://www.bbc.co.uk/iplayer/episode/b09g695x/bargain-hunt-series-48-19-hungerford-11
For about 2 seconds at 39.15 minutes and seconds into the program you can see Charlotte Rhead's dragon design on a snow glaze 12" charger - pattern number 4516. There are some other glimpses of it throughout the auction scenes in the program. It is displayed on a stand sitting on a marble topped chest of drawers, (it is not one of the items being bought or sold for Bargain Hunt).
The design is recorded in the the Bumpus book "Collecting Rhead Pottery" and in the Crown Ducal pattern books. But finding examples are very much in the hen's teeth category.
To save the effort of searching the film for a glimpse of the charger I have included a picture of it below. The decoration is tube-lining in black slip, enamels in dull black and dull scarlet and finished with bronze lustre and gold. On the reverse it has backstamp AGR2 and signature by Fanny Morrey. I would estimate the design and date of manufacture to be around the end of 1935 or very early 1936.
12" charger in pattern 4516 |