Story 10: (To) clean children in sailor suits

This story is about the TV series "Berkeley Square (1998)", see that entry for more details.

Pics on top showing a British boy (I don't know his name) in short light blue sailor suit (white collar, 2 thin stripes). He has to stretch out his arms that the nanny can verify if his hands are clean (enough). Looks very strict (though set in 1902, but was probably like that). Also the white collar, the white shirt and light blue sailor suits also looks very clean. I think he wouldn't be able to play (outside) like this without getting dirty. I wonder if his long hair is authentic.

Pic below showing a boy (the same? in episode 5) in a beige sailor suit (also white collar) thicker stripes and a bow/string tie instead of a long scarf. His hair is also not so wild and his face and mouth is being cleaned by a nanny before he might go to his parents (or else) in the dining room.
Can't the boy wash himself? Or is it not clean enough? But I remember that still in the 1970s, grandmothers liked to clean the faces and mouths of their grandchildren (using spit) if they gets dirty after eating (chocolate).
The girl was singing a dirty song and the boy talked about washing out her mouth with soap. Also an interesting fact of cleanliness. I heard that before (remembering Doug Ptolemy with soap in his mouth in "You Can't Do That on Television", see that entry, but without soap pic.)
Not sure about spanking scenes here. I like especially white collars. See also Story 1: Untidy sailor suits.