I went to Edith Neville Primary School back in the early 80's.
We used to watch a programme with this floating teaching animated thing called "Word" who had a head made of letters.
During the program there would be a cut scene of a bed shaking and a Knight or something coming up the stairs.
Did anyone see that?
Also, a space program on Saturdays with an evil Alien called 'Zelda'.
Thanks