I remember this particular episode as my friends from Heald Place Primary School took part in the quiz section. The programme was screened at the Dickenson Road Studios, famous for Top of The Pops, Pinky & Perky etc, and schools in the neighbourhood were asked to supply contestants to take part in a University Challenge-type general knowledge quiz.
Sandy Shaw presented the prizes - Tich and Quackers boxed ventriloquist dummies to each of the six kids: Stephen Robinson, Richard Collier and George Partington are the three I remember.