User blog comment:Belle pullman/Let's Play - Name That Cat! World Tour Round!/@comment-27942447-20160915114658/@comment-27942447-20160916023321

Worth noting that It appears Jonathan is wearing what later became the standard George costume (even appears to have a basis in the original George design sketch) but George in the World Tour was a Gus understudy, not a kitten, and was Derek Taylor at the time.

If the pictes were a year later, it would be easy, since it would be James Cooper and Markham Gannon as Jonathan and Quaxo.