CITV: Jason Donovan introduces "Knightmare" (12/22/1989)

While I was Googling up stuff about my favorite Australian singer Jason Donovan on British children's channel "Children's ITV" (AKA "CITV"), I came across this link (https://www.knightmare.com/forum/12/1600?start=30), I was very surprised and interested to know that my favorite singer introduced the series 3 finale of "Knightmare" when it originally aired on 22 December 1989. Unfortunately, one ITV station (TSW) cut out this introduction and the CITV link that aired after the series 3 finale of "Knightmare". I tried looking for video footage of this introduction, but I can't find any screenshots nor video footage and I almost gave up. I kept trying to look for the footage a few more times, but nothing was found. 
Can you please help me find the footage of Jason Donovan's introduction to the series 3 finale of "Knightmare" when it originally aired on CITV, I'm very interested and curious in seeing it.