Everybody Here (partially found educational TV series; 1982-1983)
From The Lost Media Wiki
Everybody Here is a 1980s educational program that ran for two years on the Channel 4 Television Corporation in the United Kingdom. The show had several children from various nations and the English poet Michael Rosen (playing the role of Mr. Smarty Pants) talk about different cultures/traditions across the world.
Despite evidently being quite popular among people who saw it, only a handful of websites even mention the show. Very little footage of the show can be found, with only the intro, a short promo, and a clip of one episode available.