There was a Twitter thread about this a while back that I'm having trouble finding, and anyway no esteemed deed is commemorated there. The discussion turned up this BBC internal newsletter with a description of the system here:
https://www.bbceng.info/Eng_Inf/eng-inf-files/EngInf20.pdf (starting on PDF page 6)
plus a different, non-kids-show (I think) YT clip which unfortunately seems to have been taken down. I don't remember it being as complete as this video, though. Much briefer.
We assumed that the program on the Lisa was a custom one made in the Lisa Pascal Workshop (note use of the Lisa system font with its distinct V shape) but by someone who had replicated the menu structures and screen furniture that you found in a program like MacPaint.
At the time, a friend of ours was doing some refurbishment work in the former
Television Centre. We instructed him to search closets for Lisas and other gear and he never returned...
...with anything of that nature. Oh well!