On IMDB she is listed (uncredited) as an actress called "Jane Doe" who has no other credits. I presume that this is a placeholder name. The other contestant is listed (uncredited) as Therese Liotard playing Danielle Aubert, but I think this is wrong: the character name isn't quite Danielle Aubry as TL played in Series 9 of Bergerac, and it doesn't look like her, though we'll have to wait a couple of months until Yesterday repeat the Series 9 episodes to check.