Thinkabout Science: Soap and Bubbles clip (1992)

This is a clip from a kids TV series called Talkabout Science from 1992. The episode is called Soap and Bubbles and features a young Victoria Shalet before she found fame in The Queen's Nose. Interestingly this clip also features Tony Marshall (as the adult), who later popped up in the 3rd series of The Queen's Nose as a chap who tried wooing Harmony's sister Melody and turned out to be a record producer. The other adult in this clip is Daphne Waring, but I don't know the boy's name. Many thanks to VideotapeFTW from Youtube for allowing me to upload a clip of this, and who has the entire episode of this and many other series from the past on his Youtube channel. The link for the whole episode of this on his channel can be found here: https://www.youtube.com/watch?v=yiwZvhqJ8Wk