Rainbow end credits (1986?)

This is a british tv show from Thames, and it was like a British Sesame Street when it first started. I put the year 1986 as the copyright at the end (when converted to a regular number as it was Roman numerals) but, the original video said it was recorded off TV meaning that it could be re-airing of this episode (the orignal video gave no clue when this was aired).

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