Jimmy had appeared on Bo’ Selecta! in 2002 (here) and 2004 saw him make “blink and you’d miss it” appearances in:

• S3 Ep2 – June 25^th 2004
• S3 Ep6 – July 23^rd 2004
• S3 Ep8 – August 6th 2004

In scenes clearly filmed on the same day he’s in a kid’s playground, sitting on a seesaw (or roundabout) and he literally gets 1 line per episode.

He was asked a question, from off camera, such as “what’s your favourite dinosaur” (in Ep2):

• Ep2 – “Barney. He’s purple” – at 9 min 45 (here)
• Ep6 – “Carpet. you’d never get rid of a dead body in a lino” – at 9 min 22 (here)
• Ep8 – “I’ll probably pick up a penguin” – at 9 min 27 (here)

According to IMDB Ep8 got 2.4m viewers and the show must have been popular as it was selling a heap of DVDs (still listing on Amazon).